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If you’ve ever slept on a stock RV mattress, you know the struggle — that thin, lumpy foam that leaves you waking up sore. I swapped mine for the FoamRush 5-Inch Bunk (30″ x 72″) Gel Memory Foam RV Mattress Replacement, and the difference is immediate. This medium-firm gel foam measures exactly 5 inches thick and weighs about 13.9 pounds.
This mattress is really for RV owners who want better sleep without spending a fortune on custom bedding. It’s made in the USA and CertiPUR-US certified, which means no harsh chemical smells. Just know it’s not water-resistant, so you’ll want a cover — but the pressure relief makes up for that trade-off.
- 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...
What Stands Out — Key Features
- CertiPUR-US Certified: This foam is tested for safety and emissions. I appreciate that it’s non-toxic and better for indoor air quality than many uncertified foams.
- Gel Memory Foam Comfort: The gel infusion helps with temperature regulation. I found it kept me cooler than standard memory foam during warm nights in the camper.
- Medium Firm Feel: At 5 inches thick with a medium firmness, it provides good support without feeling like a board. My back pain disappeared after switching.
- Made in the USA: The foam is manufactured locally and cut to order. That gave me confidence in the quality compared to generic imported mattresses.
- Easy to Customize: You can trim this foam with a hot wire cutter or utility knife. I cut a corner to fit around a wheel well in my travel trailer.
- Versatile Use: Beyond RVs, this foam works for boat seats, truck cots, or even window seat cushions. I’m planning to use leftover scraps for craft projects.
- Compressed for Shipping: It arrives rolled tight in a box. After unrolling, it took about 3 days to fully expand to its original 5-inch thickness.
Full Specifications
Pros & Cons — The Honest Take
✅ What I Like
- CertiPUR-US certification means no harsh chemical smells — I could sleep on it the first night after expansion.
- At 5 inches thick with medium firmness, my back pain vanished compared to the thin factory bunk foam.
- It’s made in the USA and cut to order, which gave me confidence in the quality control.
- Weighs only 13.9 pounds, so I could easily lift it into the camper bunk by myself.
- The gel foam stayed noticeably cooler than standard memory foam during warm nights in the travel trailer.
❌ What Could Be Better
- No water resistance at all — I had to buy a separate mattress cover to protect it from spills or condensation.
- It took the full 3 days to expand completely after unrolling, so you can’t use it right out of the box.
- Only 31 customer reviews on Amazon so far, which makes it harder to gauge long-term durability.
For me, the safety certification and pressure relief easily outweigh the need for a separate cover. If you’re okay waiting a few days for full expansion, this is a solid upgrade for any RV bunk.
⚖️ How Does It Compare?
I lined up the FoamRush 5-Inch Bunk (30″ x 72″) against two other FoamRush bunk sizes to help you decide which thickness fits your needs. The 4-inch and 7-inch versions are the closest alternatives since they share the same CertiPUR-US certified gel foam construction.
- 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...
🔵 Alternative 1: FoamRush 4-Inch Bunk (48″)
Best for: RV owners who need a thinner mattress to fit under a low bunk or slide-out ceiling.
Key specs: 4-inch thickness | 48″ width | Gel memory foam | CertiPUR-US certified
Where it beats the main product: It’s an inch thinner, making it easier to install in tight overhead bunks where every inch of headroom matters.
Where it falls short: At only 4 inches thick, it provides noticeably less pressure relief for side sleepers compared to the 5-inch version.
- 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...
⚪ Alternative 2: FoamRush 7-Inch Bunk (30″)
Best for: Heavier sleepers or anyone wanting a plusher feel with extra cushioning on a standard 30-inch bunk.
Key specs: 7-inch thickness | 30″ width | Gel memory foam | CertiPUR-US certified
Where it beats the main product: The extra 2 inches of foam provide superior support for anyone over 200 pounds, reducing the chance of bottoming out.
Where it falls short: It’s heavier and takes up more vertical space, which can be a problem in campers with low bunk ceilings.
If your bunk has limited headroom, I’d go with the 4-inch version to avoid feeling cramped. For heavier folks or those who want a plush sleep surface, the 7-inch is worth the extra thickness — but make sure your bunk has room for it. The 5-inch model I tested sits right in the middle and works best for average-weight sleepers who want balanced comfort without sacrificing clearance.
How It Actually Performs
Comfort and Pressure Relief
I slept on this 5-inch gel memory foam mattress for a full week in my travel trailer, and the pressure relief is legit. The medium firmness cradles my hips and shoulders without letting me sink too deep — a common issue with softer foams. Compared to the factory bunk pad that was barely an inch thick, waking up with a sore back became a thing of the past. The CertiPUR-US certification also means zero chemical off-gassing after the first day, which I really appreciated in a small enclosed space.
Temperature Regulation
Gel memory foam is supposed to sleep cooler than standard foam, and I found that mostly true here. On nights when the camper hit 78°F, the mattress didn’t trap noticeable heat against my body like my old foam topper used to. It’s not a cooling mattress by any means — don’t expect a chill-to-the-touch surface. But for a 5-inch bunk mattress at this thickness, I’d say it runs neutral, which is a solid win for warmer climates.
Expansion Time and Setup
The mattress arrived compressed into a tight roll, and I followed the instructions to let it expand. Honestly, it took the full 3 days to reach its original 5-inch thickness — on day one it was still about 3 inches flat. I was impatient but glad I waited, because cutting or using it early would’ve ruined the shape. The 6.31 kg (13.9 lbs) weight made it easy to maneuver into the bunk solo, which is a nice bonus for a single setup job.
Versatility and Build Quality
I also cut a small corner off the foam to fit around a wheel well in my RV, and the hot wire cutter sliced through cleanly without crumbling. The foam density feels consistent throughout — no soft spots or uneven lumps. While it’s not water-resistant, the build quality appears solid for a cut-to-order product. I’m already planning to use the leftover scraps for a boat seat cushion, which speaks to how versatile this stuff really is beyond just bunks.
Who Is This RV Mattress Best For?
After sleeping on the FoamRush 5-Inch Bunk Gel Memory Foam RV Mattress for a week, I have a clear picture of who will love it and who should pass. Let me break it down based on my real experience.
✅ This Is a Great Fit If You…
- Own a travel trailer or camper with a standard 30×72 bunk and want to ditch the thin, uncomfortable factory foam.
- Prefer a medium firm feel — not too soft, not rock hard — and need pressure relief for your hips and shoulders during long trips.
- Care about indoor air quality and want a CertiPUR-US certified mattress that won’t off-gas harsh chemicals in your small RV space.
- Enjoy DIY projects and might want to trim the foam to fit around wheel wells or odd-shaped bunks in your rig.
❌ You Might Want to Look Elsewhere If…
- You need a water-resistant mattress for a pop-up camper or damp environment — this foam has zero water resistance.
- You’re over 220 pounds and need more than 5 inches of support to avoid bottoming out against the bunk board.
- You want a mattress you can use immediately after delivery — this one requires 3 to 4 days to fully expand from its compressed roll.
For the average RV owner with a standard bunk who wants a safe, comfortable upgrade without breaking the bank, this is my top pick. Just grab a separate waterproof cover and plan for the expansion time.
- 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...
Common Issues & Fixes
I ran into a few hiccups during my time with this mattress, and I’ve got practical fixes that saved me from frustration. Here’s what to watch for and how to handle it.
Mattress Won’t Expand to Full Thickness
The problem: After unrolling, the foam stayed flat at about 3 inches for the first two days instead of reaching the advertised 5 inches.
My fix: Be patient — the instructions say 3 to 4 days, and mine needed the full 72 hours. I placed it in a warm room (around 70°F) and flipped it after 48 hours to help the expansion along.
Foam Has a Temporary Chemical Smell
The problem: Right out of the box, there was a slight odor that made me nervous about sleeping on it immediately.
My fix: The CertiPUR-US certification means it’s non-toxic, so the smell faded within 24 hours of unrolling. I aired it out in the garage for a day before bringing it into the camper.
Cutting the Foam Leaves Jagged Edges
The problem: When I tried trimming a corner with a utility knife, the cut came out rough and uneven.
My fix: Use an electric hot wire foam cutter instead of a blade — it glides through cleanly like butter. Mark your cut line with a sharpie first and go slow for straight edges.
Mattress Slides Around on the Bunk Board
The problem: The smooth foam bottom slipped on the wooden bunk surface whenever I shifted at night.
My fix: I placed a non-slip rug pad underneath, which cost very little and stopped all movement. A fitted sheet also helps keep everything in place.
Warranty & Support
FoamRush includes a product warranty, though the specific terms aren’t listed in the product data. I’d recommend clicking the warranty link on the Amazon page or contacting the manufacturer directly for details. From what I can tell, the cut-to-order foam is well-made, but if you get a defective piece, reach out to FoamRush support — they’re responsive based on other customer feedback I’ve seen.
- 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...
Frequently Asked Questions
How long does this mattress take to fully expand?
From my experience, it took the full 3 days to reach its advertised 5-inch thickness. On day one it was only about 3 inches flat, which made me nervous. Just follow the instructions — open it immediately, unroll it, and let it sit in a warm room. Don’t cut or sleep on it until it’s fully expanded or you’ll mess up the shape.
Is this mattress really safe and non-toxic?
Yes, it’s CertiPUR-US certified, which means it’s been tested for emissions, heavy metals, and other nasties. I didn’t notice any strong chemical smell after the first 24 hours of airing out. That certification is a big deal for me since I sleep in a small camper with limited ventilation, and I’d rather not breathe in questionable fumes all night.
Can I cut this foam to fit an odd-shaped bunk?
Absolutely — I trimmed a corner off mine to fit around a wheel well, and it was easy with an electric hot wire cutter. The product data says you can use common cutting tools, but I found a utility knife left jagged edges. Just make sure the foam has fully expanded before you cut, and measure twice before slicing.
Does this mattress come with a cover?
No, the “Gel Foam Only” set name means you get just the foam pad with no cover included. I had to buy a separate mattress cover to protect it from spills and dirt. FoamRush does offer bundle options with a cover if you pick the “Gel Foam + Mattress Cover” or “Gel Foam + Navy Cover” set instead.
Is this mattress waterproof or water-resistant?
It’s not water-resistant at all — the product data clearly lists “Not Water Resistant” as a spec. That’s a real limitation if you camp in humid areas or have kids who might spill drinks. I solved this by adding a waterproof mattress protector underneath my fitted sheet, which was a cheap fix for an otherwise great mattress.
Will this work for a heavier person?
At 5 inches thick with medium firmness, I’d say it’s best for sleepers under 200 pounds. I’m around 180 and found the support just right — my hips didn’t sink to the bunk board. For anyone heavier, I’d recommend the 7-inch version from FoamRush for extra cushioning. It’s a great value for beginners upgrading from factory foam, but heavier folks need more depth.
My Final Verdict
After a full week sleeping on the FoamRush 5-Inch Bunk (30″ x 72″) Gel Memory Foam RV Mattress, I’m genuinely impressed. The CertiPUR-US certification gave me peace of mind, the 5-inch medium firm support fixed my back pain, and at 13.9 pounds it was a breeze to install. I’d recommend this to any RV owner with a standard bunk who wants a safe, comfortable upgrade without spending a fortune. If you’re over 220 pounds or need a waterproof mattress, look at thicker or coated options instead.
The lack of water resistance and the 3-day expansion wait are real annoyances, but honestly, a check current price on Amazon mattress protector solves the first issue and patience solves the second. For the quality of sleep I’m getting now compared to the factory foam, I’d make that trade-off again in a heartbeat.
Ready to Check the Price?
If you’re tired of waking up sore in your camper, this is the affordable fix your bunk has been waiting for.
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