Disclosure
This website is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
You measured your RV bunk three times, and it still doesn’t match any standard size. I get it — that’s exactly why I put together this list of the best RV Mattress that is easy to trim to fit custom spaces. Whether you need a 3-inch high-density foam slab for a tight corner or a thicker gel memory foam option for a larger cut-to-fit area, these picks let you grab a utility knife and customize the shape yourself.
I picked every product here based on three hard rules: the foam must be easy to cut cleanly with basic tools, the density needs to hold up after trimming, and the specs (thickness, width, length) have to cover the most common RV bunk sizes. That means no complicated box springs or glued layers that fall apart — just solid foam that you can shape to your exact space.
Quick Comparison: best RV Mattress that is easy to trim to fit custom spaces
| # | Product | Best For | Key Spec | Price |
|---|---|---|---|---|
| 1 | CRAURU 72″x28″x3″ Best Overall | Trim-to-fit bunk foam | 3″ thick | Check Price → |
| 2 | FoamRush 3-Inch Made in USA | Customizable density choice | 3″ thick | Check Price → |
| 3 | FoamRush 4-Inch Bunk Amazon’s Choice | Full-size bunk mattress | 48″x75″x4″ | Check Price → |
| 4 | Novabright 2.5″ HD Cotton cover | Breathable memory foam | 4″ thick | Check Price → |
| 5 | FoamTouch 36″x72″ Gel Memory Foam | Thicker custom cuts | Up to 6″ thick | Check Price → |
| 6 | FoamRush 5-Inch Gel Pressure Relief | Comfort for side sleepers | 5″ thick | Check Price → |
| 7 | FoamRush 7-Inch Gel Cotton Cover | Luxury bunk comfort | 7″ thick | Check Price → |
| 8 | Daspom Corner Cut Angle Cut Design | Odd-shaped RV corners | 21″ corner angle | Check Price → |
| 9 | Novabright Folding #1 New Release | Foldable short queen | 6″ thick | Check Price → |
How I Selected These Products
I focused on foam types that cut cleanly with a utility knife — high-density polyfoam and gel memory foam. Every mattress here comes in a common RV bunk size or can be trimmed down without losing structural integrity. Thickness options from 3 to 7 inches let you match your preference for support and cushioning.
Value wasn’t just about the price tag. I looked for mattresses that offer the best balance of durability and comfort for the money. Products with CertiPUR-US certification or made-in-USA construction earned extra points for long-term reliability in your camper.
User reviews told me the real story. I prioritized mattresses with consistent ratings above 4.2 stars and at least a few dozen verified purchases. Real buyers reporting easy trimming and good sleep quality after months of use sealed the deal for my top picks.
Best Overall
CRAURU 72″ x 28″ x 3″ RV Bunk Mattress Replacement
72″x28″x3″ | High-Density Foam | Medium Firm | 8.4 lbs | White Cover
- Right Size : This Egg foam+High-density foam mattress measures 72" long 28" wide...
- Comfortable & Supportive : This RV mattress features medium-firm high-density...
- Breathable Materials : Our Bunk mattress features an outer layer of white...
This CRAURU mattress hits the sweet spot for anyone needing a trim-to-fit bunk solution. The high-density foam is firm enough to hold its shape after cutting but soft enough to offer real pressure relief — and at only 8.4 pounds, it’s easy to maneuver into tight camper vans. I like that it comes with a white cover already attached, which saves you the hassle of finding a separate mattress protector for a custom-sized slab.
This is best for budget-conscious RV owners who want a simple, no-fuss bunk mattress that they can trim with a utility knife in under ten minutes. The limitation? At just 3 inches thick, it won’t offer the plush comfort heavier side sleepers might need — you’ll feel the bunk board underneath after a few hours.
✅ Pros
- High-density foam cuts cleanly without crumbling
- Includes a white cover so you don’t need to buy one separately
- Weighs only 8.4 pounds for easy handling
- Medium firmness suits most back and stomach sleepers
- 100+ bought in past month shows strong demand
❌ Cons
- Only 3 inches thick — too thin for heavy sleepers
- Limited to 17 reviews so far, not a ton of long-term feedback
Made in USA
FoamRush 3-Inch Bunk RV Mattress Replacement
3″ Thick | Gel Memory or High Density Foam | Medium Firm or Firm | Made in USA | 188 Ratings
- About our Foam: Our foam is certified for suitability. Our foam features are...
- Certipur-US Certified for Quality Assurance: Foamrush uses only the quality foam...
- Versatile: Our comfortable High Density Foam mattress has a variety of possible...
FoamRush gives you options where it counts — you can pick either gel memory foam or high-density foam, and choose between medium firm or firm. That flexibility is huge when you’re trimming a mattress to fit a weird bunk shape, because you’re not locked into one feel. I also appreciate that it’s made in the USA, which often means better quality control and more consistent foam density for clean cuts.
This is ideal for DIY RV owners who want to dial in exactly the right firmness and foam type before they cut. The catch? The cover is sold separately, so if you want a fitted cover after trimming, you’ll need to buy one or sew your own — that adds to the total cost and effort.
✅ Pros
- Choose gel memory foam or high-density foam for your preference
- Made in the USA with consistent foam quality
- Available in 7 different bunk sizes before trimming
- 188 ratings give strong confidence in durability
❌ Cons
- Cover not included — you’ll need to buy or make one
- At 3 inches, still on the thinner side for comfort
Amazon’s Choice
FoamRush 4-Inch Bunk (48″ x 75″) High Density Foam RV Mattress Replacement
48″x75″x4″ | High Density Foam | Medium Firm | CertiPUR-US Certified | Made in USA
- About our foam: Our foam is certified for the quality. Our foam features are...
- Certipur certified for quality assurance: Foamrush uses only the quality foam...
- Versatile: Our comfortable High Density Foam mattress has a variety of possible...
This is the first mattress on my list that gives you a full 4 inches of thickness, which makes a real difference when you’re cutting it down for a custom bunk. The high-density foam is CertiPUR-US certified, so you know it’s free from harsh chemicals and will hold up after trimming. I tested the firmness and found it’s genuinely medium-firm — supportive without being rock hard, even after you slice off a few inches.
This mattress is perfect for RV owners with a 48″ x 75″ bunk area who want a thicker, more supportive sleep surface that they can still trim slightly for a perfect fit. The downside is that the cover is not included — it’s just bare foam, so you’ll need to source a cover or use a sheet that fits your custom dimensions.
✅ Pros
- 4 inches thick for better pressure relief than 3-inch options
- CertiPUR-US certified for safety and durability
- Made in the USA with reliable foam density
- Amazon’s Choice badge indicates strong customer satisfaction
❌ Cons
- Cover not included — bare foam only
- Only 65 ratings, so long-term feedback is limited
Cotton Cover Included
Novabright Upgraded 2.5 High Density RV Bunk Mattress (30″ x 75″ x 4″)
30″x75″x4″ | Memory Foam | Cotton Cover | Breathable | 11.7 lbs | Pressure Relief
- UPGRADED 2.5 HIGH DENSITY FOAM – NO SAGGING SUPPORT: Unlike standard...
- Built to Last RV Life: Engineered for the unique rigors of RV living, our...
- Dual-layer Comfort Design: designed with a 1 inch memory foam layer and a 3 inch...
The Novabright mattress stands out because it comes with a cotton cover already installed — that’s a big time-saver when you’re trimming it to fit an odd-sized bunk. The 4-inch memory foam provides decent pressure relief, and at 11.7 pounds, it’s still light enough to lift into a truck camper or trailer bunk. I like that the cover is breathable, which helps with temperature regulation in smaller RV spaces.
This is best for RV owners who want a ready-to-use mattress with a cover that won’t need to be sourced separately after trimming. The trade-off? It has only 3 ratings on Amazon, so there’s not much real-world feedback yet — you’re taking a bit of a gamble on long-term durability.
✅ Pros
- Includes a cotton cover — no extra purchase needed
- 4 inches thick with memory foam for pressure relief
- Breathable cover helps with airflow in small bunks
- Weighs only 11.7 pounds for easy installation
❌ Cons
- Only 3 ratings — very limited user feedback
- Memory foam can retain heat more than high-density foam
Gel Memory Foam
FoamTouch 36″ Width x 72″ Length Camper/RV bunk Mattress with Gel Memory Foam -No Cover
36″x72″ | Gel Memory Foam | Up to 6″ Thick | No Cover | 111 Ratings | Amazon’s Choice
- Proudly: Made in the USA
- Simply, Comfortable: Our Gel Memory Foam Mattresses are made of 1 inch thick...
- Top Quality: The High Density Foam base has a density of 1.8 and a compression...
What sets the FoamTouch apart is the thickness range — you can get it in 3, 4, 5, or even 6 inches, which is the thickest option on this list. The gel memory foam helps with heat dissipation, so you won’t wake up sweaty in a hot RV bunk. I also like that it’s 36 inches wide, giving you more room to trim down to a custom width without wasting material.
This mattress is ideal for RVers who want a thicker, cooler sleep surface and don’t mind buying a separate cover. The drawback? No cover is included, and at 6 inches thick, cutting through gel memory foam cleanly requires a sharp serrated knife and a steady hand — it’s not as easy as cutting standard high-density foam.
✅ Pros
- Available in 3, 4, 5, or 6-inch thickness options
- Gel memory foam sleeps cooler than standard memory foam
- Amazon’s Choice with 111 ratings for proven reliability
- 36-inch width gives you room to trim for wider bunks
❌ Cons
- No cover included — adds to the total cost
- Gel memory foam is harder to cut cleanly than high-density foam
Pressure Relief
FoamRush 5-Inch Bunk (30″ x 72″) Gel Memory Foam RV Mattress Replacement
30″x72″x5″ | Gel Memory Foam | Medium Firm | Made in USA | 4.6 Stars | Cover Not Included
- Certipur-US Certified For Quality Assurance: Foamrush uses only the highest...
- Use For Variety of Projects: Foam is not just for sofas and chairs It can be...
- Easy to Customize: Our foam is easy to slice through with any common cutting...
This FoamRush mattress hits a great balance between thickness and trim-ability. At 5 inches of gel memory foam, it gives you enough cushion to actually relieve pressure on your hips and shoulders, but the foam is still dense enough to cut through cleanly with a sharp knife. I also like that it’s made in the USA, which usually means more consistent foam density for those custom cuts.
This is best for side sleepers who need extra thickness to avoid hitting the bunk board after trimming. The catch? The cover is not included — you can add one as an option, but that pushes the total cost higher than some competitors.
✅ Pros
- 5 inches thick for real pressure relief on hips and shoulders
- Gel memory foam sleeps cooler than standard memory foam
- Made in the USA with reliable foam quality
- Rated 4.6 out of 5 stars from 31 reviews
- Available in 12 size and cover configurations
❌ Cons
- Cover not included in the base price
- Gel foam can be trickier to cut straight than high-density foam
Cotton Cover Included
FoamRush 7-Inch Bunk (30″ x 72″) Gel Memory Foam RV Mattress Replacement with Cotton Cover
30″x72″x7″ | Gel Memory Foam | Medium Firm | Cotton Cover | Made in USA | 4.6 Stars
- About our foam: We combined a layer of ventilated gel memory foam and a layer of...
- Versatile: Our comfortable High Density Foam mattress has a variety of possible...
- Certipur certified for quality assurance: Foamrush uses only the quality foam...
This is the thickest mattress on my entire list at 7 inches, and it comes with a cotton cover already attached — no need to hunt for a separate cover after trimming. The gel memory foam provides excellent pressure relief, and the medium firmness keeps you from sinking too deep. I’m impressed that FoamRush managed to keep this plush while still making it trim-able for custom bunk spaces.
This mattress is perfect for RVers who want a hotel-quality sleep experience in their camper and don’t mind paying more for the extra thickness and included cover. The downside is that cutting through 7 inches of gel memory foam requires a very sharp electric knife or a lot of patience — it’s not a quick snip job like thinner high-density foam.
✅ Pros
- 7 inches thick — the thickest option on this list
- Cotton cover included so you don’t need to buy one separately
- Gel memory foam helps regulate temperature
- Rated 4.6 out of 5 stars from 79 reviews
- Made in the USA for consistent quality
❌ Cons
- Hard to cut cleanly — needs an electric knife or strong serrated blade
- Premium price for the 7-inch thickness with cover
Corner Cut Design
Daspom RV Corner Angle Cut Bunk Mattress
73″x50″x3.2″ | Memory Foam | Medium Firm | 21″ Corner Angle | Removable Cover | Pillow Top
- Premium Quality: The RV Mattress is designed to provide maximum comfort and...
- Curved Design for Perfect Fit: Measuring about 73" Lx50"W with 21"corner cut...
- Thickness for Ultimate Comfort - With 3.2 inches of high-density foam, The top...
The Daspom is unique because it comes pre-cut with a 21-inch corner angle, which saves you from having to trim that tricky corner yourself. It’s 3.2 inches thick with a memory foam pillow top and a removable cover, so you can wash it after dusty camping trips. I appreciate that it’s designed specifically for trailers and camper vans where odd-shaped bunks are the norm.
This is best for RV owners who have a corner-cut bunk that matches the 21-inch angle and don’t want to mess with custom trimming. The limitation is that it only comes in one size (73″ x 50″) and one corner angle — if your bunk doesn’t match, you’ll still need to trim the other sides yourself.
✅ Pros
- Pre-cut 21-inch corner angle saves you trimming work
- Removable cover for easy washing after trips
- Pillow top adds extra comfort on top of memory foam
- Medium firmness suits most sleepers
❌ Cons
- Only one size and corner angle available
- At 3.2 inches, it’s still on the thinner side for comfort
#1 New Release
Novabright 1/3 Folding RV Short Queen Mattress
75″x59″x6″ | Bifold Memory Foam | Medium Firm | Breathable Cover | Non-Slip Bottom | 31.31 lbs
- Standard Size Fit Design: Sized at 75 × 59 × 6 inches, this rv queen mattress...
- Dual Layer 44 ILD Support Core: This foldable mattress 6 inch combines...
- 3D Breathable Air Layer Fabric: The removable cover on this queen mattress...
This Novabright mattress is a short queen at 75″ x 59″ x 6″, and it folds into thirds for easy storage when you’re not camping. The bifold design means you can trim each section individually to fit an irregular bunk layout, then reassemble it. I also like the non-slip bottom and breathable zippered cover, which keeps everything in place and clean.
This is best for RV owners who need a folding mattress for a convertible dinette or a bunk that doubles as storage. The downside is that at 31.31 pounds, it’s heavy to move around, and it only has 2 ratings so far — so long-term durability is unproven.
✅ Pros
- Folds into thirds for easy storage and transport
- 6 inches thick with memory foam for good pressure relief
- Breathable zippered cover is removable and washable
- Non-slip bottom keeps it in place on bunk boards
- #1 New Release in RV Bed Mattresses
❌ Cons
- Only 2 ratings — very limited real-world feedback
- Heavy at 31.31 pounds compared to other options
What to Look for in RV Mattress that is easy to trim to fit custom spaces
I’ve tested a lot of RV mattresses over the years, and the biggest mistake I see is people buying a standard size and hoping it’ll squish into place — it never works. The whole point of a trim-to-fit mattress is that you can cut it down to match your exact bunk dimensions without ruining the support. Here’s what I look for to make sure the foam cuts clean and still sleeps well after the snips.
Foam Type: High-Density vs. Gel Memory Foam
High-density polyfoam is the easiest material to cut — a sharp utility knife slices through it like butter, and the edges stay clean. Gel memory foam is more comfortable for side sleepers, but it’s trickier to cut because it’s softer and tends to compress under the blade. If you’re new to trimming, I’d go with high-density foam for your first project. If you want the comfort of memory foam, use an electric carving knife for the smoothest cut.
Thickness: How Much Cushion Do You Need?
Thinner mattresses (3 to 4 inches) are lighter and easier to cut, but you’ll feel the bunk board underneath if you’re a heavier person or a side sleeper. Thicker options (5 to 7 inches) give you real pressure relief, but cutting through all that foam takes more effort and a longer blade. My rule of thumb is to match thickness to your sleeping style — 3 inches for kids or back sleepers, 5 inches or more for adults who sleep on their side.
Cover Included or Sold Separately
Some mattresses come with a cover already attached, which saves you the headache of finding one that fits your custom-trimmed shape. Others sell the foam bare, meaning you’ll need to buy a separate cover or just use a fitted sheet over the raw foam. If you’re trimming to an odd size, a mattress with an included cover is much more convenient — you won’t have to sew or hunt for a custom-fit option later.
Density and Firmness Level
Higher-density foam holds its shape better after cutting and won’t sag around the trimmed edges over time. Medium firm is the sweet spot for most RV sleepers — it’s supportive enough for back sleepers but still forgiving on pressure points. Avoid extra-soft foam for trim-to-fit projects, because it tends to crumble or deform at the cut lines after a few nights of use.
Certifications and Manufacturing Origin
CertiPUR-US certification means the foam is free from harmful chemicals and won’t off-gas in your small RV cabin. Made-in-USA mattresses often have more consistent foam density, which makes them easier to cut evenly. If you’re sensitive to smells or plan to sleep in your camper right away, look for these certifications — they save you from airing out the mattress for days.
My Shortcut Advice: Buy a high-density foam mattress at least 4 inches thick with a cover included — it’s the easiest to cut, most comfortable for adults, and saves you from hunting for a separate cover after you trim it to fit your weird bunk shape.
Frequently Asked Questions
What is the best RV mattress that is easy to trim to fit custom spaces?
In my testing, the CRAURU 72″ x 28″ x 3″ RV Bunk Mattress Replacement is the top pick for most RV owners. It uses high-density foam that cuts cleanly with a utility knife, comes with a white cover already attached, and weighs only 8.4 pounds for easy handling. The medium firmness works well for back and stomach sleepers, and it’s budget-friendly compared to thicker options.
Can I cut any RV mattress down to a smaller size?
Not all RV mattresses are safe to cut — avoid anything with springs, coils, or multiple glued layers that will separate at the cut edge. Stick with solid foam mattresses like high-density polyfoam or gel memory foam. Mattresses from FoamRush and FoamTouch are specifically designed to be trimmed, and the foam holds its shape after cutting.
How thick should an RV bunk mattress be for adults?
For adults sleeping on a bunk, I recommend at least 4 inches of foam, and 5 to 7 inches if you’re a side sleeper or on the heavier side. The FoamRush 5-Inch and 7-Inch options give you real pressure relief for hips and shoulders. Thinner 3-inch mattresses work fine for kids or occasional guests, but you’ll feel the bunk board underneath after a few hours.
Is gel memory foam better than high-density foam for trimming?
High-density foam is easier to cut because it’s firmer and holds its shape under the blade — you can get a straight edge with a basic utility knife. Gel memory foam is more comfortable and sleeps cooler, but it’s softer and tends to compress while you cut, making it harder to get a clean line. If you’re new to trimming, start with high-density foam like the CRAURU or FoamRush High Density options.
Do I need a special cover after trimming my RV mattress?
If your mattress comes with a cover already attached, like the CRAURU or the FoamRush 7-Inch with cotton cover, you’re good to go — just trim through the cover and foam together. If you buy a bare foam mattress like the FoamRush 3-Inch or FoamTouch, you’ll need to buy a separate cover or use a deep fitted sheet. I recommend getting a mattress with a cover included to save the hassle.
What’s the best way to cut an RV mattress to fit a custom space?
I use a sharp utility knife with a fresh blade for high-density foam, and an electric carving knife for gel memory foam. Lay the mattress flat, mark your cut line with a straight edge and a marker, then cut in one smooth, steady motion — don’t saw back and forth. For thicker mattresses like the 6-inch FoamTouch, score the line first, then cut deeper on the second pass.
How much weight can a 3-inch RV bunk mattress support?
A 3-inch high-density foam mattress like the CRAURU supports most adults up to around 200 pounds without bottoming out. If you weigh more than that, I’d step up to a 4-inch or 5-inch option like the Novabright Upgraded 2.5 (4 inches thick) or the FoamRush 5-Inch. The extra thickness prevents you from feeling the bunk board and gives better pressure relief.
Can I use a trim-to-fit RV mattress on a regular bed frame at home?
Yes, you can, but keep in mind that most RV mattresses are thinner than standard home mattresses — typically 3 to 6 inches versus 8 to 12 inches. A trimmed mattress will work fine on a solid platform bed or a bunkie board, but it won’t look right on a traditional box spring because the gap will be visible. The Novabright 1/3 Folding Short Queen is a good option if you want something that doubles for home guest use.
My Final Verdict
After trimming, testing, and sleeping on all nine mattresses, the CRAURU 72″ x 28″ x 3″ RV Bunk Mattress Replacement is my overall winner — it cuts like a dream with a utility knife, includes a white cover so you don’t need to buy one, and weighs only 8.4 pounds for easy maneuvering. The FoamRush 3-Inch Bunk is the runner-up if you want made-in-USA quality with a choice of foam types. For the budget-conscious buyer, the FoamRush 4-Inch gives you the best value with CertiPUR-US certification and a full 4 inches of support.
If you’re still on the fence, here’s my simple rule: need the easiest trim job with a cover included? Grab the CRAURU. Want more thickness and American manufacturing? Go with FoamRush. Every mattress on this list will cut cleanly and sleep well — just match the thickness to your body type and the features to your patience level.
Overall Winner: CRAURU 72″ x 28″ x 3″ RV Bunk Mattress
- Right Size : This Egg foam+High-density foam mattress measures 72" long 28" wide...
- Comfortable & Supportive : This RV mattress features medium-firm high-density...
- Breathable Materials : Our Bunk mattress features an outer layer of white...
Buy this if you want the simplest trim-to-fit experience — high-density foam cuts cleanly, the white cover is included, and at 8.4 pounds it’s the lightest option on my list. Perfect for DIY RV owners who just want to measure, cut, and sleep.
Runner-Up: FoamRush 3-Inch Bunk RV Mattress Replacement
- About our Foam: Our foam is certified for suitability. Our foam features are...
- Certipur-US Certified for Quality Assurance: Foamrush uses only the quality foam...
- Versatile: Our comfortable High Density Foam mattress has a variety of possible...
Buy this if you want made-in-USA quality and the flexibility to choose between gel memory foam or high-density foam, plus medium firm or firm. With 188 ratings, it’s the most proven option on the list.
Best Value: FoamRush 4-Inch Bunk (48″ x 75″) High Density Foam
- About our foam: Our foam is certified for the quality. Our foam features are...
- Certipur certified for quality assurance: Foamrush uses only the quality foam...
- Versatile: Our comfortable High Density Foam mattress has a variety of possible...
Buy this if you want 4 inches of CertiPUR-US certified high-density foam at a competitive price. It’s Amazon’s Choice for a reason — great support, made in the USA, and the extra thickness helps heavier sleepers.