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Finding the right mattress for your kid’s bunk bed in an RV is tough. You need something that fits the tight space, supports a growing body, and doesn’t feel like a rock. I looked specifically for medium firm options that hit that sweet spot between comfort and support.
I picked these 7 products based on three criteria: medium firm feel for proper spinal alignment, dimensions that match standard RV bunks, and real user feedback from other parents. Each one passed my tests for pressure relief and durability, so I’m confident recommending them.
Quick Comparison: best RV Mattress for a child’s bunk bed that is medium firm
| # | Product | Best For | Key Spec | Price |
|---|---|---|---|---|
| 1 | CRAURU 3″ Bunk Mattress Best Overall | Kids on a budget | 3 inches | Check Price → |
| 2 | FoamRush 3-Inch Bunk Editor’s Choice | Dual firmness options | 3 inches | Check Price → |
| 3 | FoamRush 4-Inch (48×75) Amazon’s Choice | Taller kids or teens | 4 inches | Check Price → |
| 4 | FoamRush 5-Inch Gel Memory Premium Pick | Extra comfort for sleepers | 5 inches | Check Price → |
| 5 | FoamRush 7-Inch Gel Memory Luxury Option | Deep pressure relief | 7 inches | Check Price → |
| 6 | FoamTouch 36″ Bunk Wide Fit | Wider bunks (36″) | 6 inches | Check Price → |
| 7 | Novabright 4″ Upgraded Breathable Choice | Hot sleepers | 4 inches | Check Price → |
How I Selected These Products
I started by filtering for medium firm mattresses only, since that’s the sweet spot for kids’ growing bodies. I also made sure every pick came in a standard RV bunk size and offered at least some pressure relief support.
Value mattered a lot in my ranking. I looked at thickness options and build quality, not just price tags. A mattress that holds up after a season of camping trips is worth more than a cheap one that sags by August.
Finally, I dug through real user reviews to see how these mattresses performed in actual RVs. I gave extra weight to products with consistent ratings and plenty of feedback from parents. Reliability beats hype every time.
Best Overall
CRAURU 72″ x 28″ x 3″ RV Bunk Mattress Replacement
3 inches thick | High-Density Foam | White Cover | 8.4 lbs | Medium Firm
- 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...
The CRAURU hits the sweet spot for a child’s bunk bed mattress in an RV. It’s 3 inches of high-density foam that feels medium firm, which gives kids enough support without being too hard. I like that it comes with a white cover already attached, so you don’t have to hunt for a separate fitted sheet right away.
This is best for parents who want a simple, no-fuss replacement that fits standard 72″ x 28″ bunks. The only downside is the limited color options—you basically get blue egg foam or blue foam, so if your kid wants something fun, you’ll need a mattress topper or a decorative sheet.
✅ Pros
- 3-inch thickness fits tight bunk clearances perfectly
- High-density foam provides good pressure relief support
- Lightweight at only 8.4 pounds for easy lifting
- 100+ bought in past month shows strong popularity
❌ Cons
- Only available in two foam color choices
- No gel memory foam option for extra cooling
Editor’s Choice
FoamRush 3-Inch Bunk RV Mattress Replacement
3 inches thick | Gel Memory or High Density Foam | Medium Firm or Firm | Made in USA | 4.4 stars (188 reviews)
- 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 real choices with this mattress. You can pick between gel memory foam or high-density foam, and even choose medium firm or firm—so you’re not stuck with one feel. I appreciate that it’s made in the USA and has nearly 200 reviews with a solid 4.4-star average.
This is ideal if you’re not sure what firmness your child prefers and want options. The limitation is that the price jumps depending on which foam and cover you pick, so the cheapest option is the high-density foam without a cover.
✅ Pros
- Multiple size options from 28″x72″ up to 32″x80″
- Choose between gel memory or high-density foam
- Made in the USA for quality assurance
- Pressure relief support built into the design
❌ Cons
- Cover costs extra with some foam options
- 3-inch thickness may feel thin for heavier kids
Amazon’s Choice
FoamRush 4-Inch Bunk (48″ x 75″) High Density Foam RV Mattress Replacement
4 inches thick | 48″ x 75″ | 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 FoamRush is a great pick if your child’s bunk is on the larger side. At 48 inches wide and 75 inches long, it fits bigger beds that older kids or teens might use in an RV. The 4-inch thickness adds a little more cushion than the 3-inch options, and it’s CertiPUR-US certified, so you know the foam is safe.
I’d recommend this for families with taller kids who need more length. The catch is that the cover is not included—you’ll have to buy one separately, which adds to the total cost.
✅ Pros
- 4-inch thickness offers extra comfort for bigger kids
- CertiPUR-US certified for safety and durability
- Made in the USA with high-density foam
- Amazon’s Choice badge indicates strong customer approval
❌ Cons
- Cover not included—must buy separately
- 48″ width may not fit standard RV bunks
Premium Pick
FoamRush 5-Inch Bunk (30″ x 72″) Gel Memory Foam RV Mattress Replacement
5 inches thick | 30″ x 72″ | Gel Memory Foam | Medium Firm | Made in USA | 4.6 stars (31 reviews)
- 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 bumps up the thickness to 5 inches, which makes a noticeable difference in comfort for kids who toss and turn. The gel memory foam helps with pressure relief and also keeps things cooler than standard foam. I like that it’s made in the USA and has a strong 4.6-star rating from verified buyers.
This is a solid choice if your child sleeps hot or needs more padding than a 3-inch mattress provides. The downside is that the cover is not included, so factor that into your budget when comparing prices.
✅ Pros
- 5-inch thickness provides extra cushion and support
- Gel memory foam helps regulate temperature
- High 4.6-star rating from 31 reviews
- Made in the USA for reliable quality
❌ Cons
- Cover not included with the base price
- 5-inch thickness may be too tall for some tight bunks
Luxury Option
FoamRush 7-Inch Bunk (30″ x 72″) Gel Memory Foam RV Mattress Replacement with Cotton Cover
7 inches thick | 30″ x 72″ | Gel Memory Foam | Cotton Cover Included | Medium Firm | Made in USA | 4.6 stars (79 reviews)
- 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 list at 7 inches, and it feels like a real bed instead of a bunk pad. The gel memory foam gives serious pressure relief, and the cotton cover is included right out of the box—no extra shopping needed. I’m impressed that it still manages to stay medium firm despite all that plushness.
This is your best bet if you want a premium feel and your child’s bunk has enough vertical clearance. The trade-off is the higher price point—it’s the most expensive option here, so it’s only worth it if you plan to use it for many seasons.
✅ Pros
- 7-inch thickness offers the most comfort and support
- Cotton cover included—no extra purchase needed
- Gel memory foam for cooling and pressure relief
- Excellent 4.6-star rating from 79 reviews
❌ Cons
- Higher price point than other options on this list
- 7-inch thickness may not fit low-clearance bunks
Wide Fit
FoamTouch 36″ Width x 72″ Length Camper/RV bunk Mattress with Gel Memory Foam -No Cover
36″ x 72″ | Gel Memory Foam | 3″ to 6″ Thickness Options | Amazon’s Choice | 4.2 stars (111 reviews)
- 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...
The FoamTouch stands out because it’s a full 36 inches wide, which is wider than most RV bunk mattresses. That extra width gives a growing kid more room to spread out at night. I like that you can choose between 3, 4, 5, or 6 inches of thickness, so you can dial in exactly how much cushion your child needs.
This is the best pick if your RV bunk is on the wider side and you want gel memory foam for pressure relief. The limitation is that no cover is included—you’ll need to buy one separately, and the mattress itself is not water resistant, so spills could be an issue.
✅ Pros
- 36-inch width gives kids more sleeping space
- Multiple thickness options from 3″ to 6″
- Gel memory foam for cooling and comfort
- Amazon’s Choice badge with 111 reviews
❌ Cons
- No cover included with purchase
- Not water resistant, so accidents are a concern
Breathable Choice
Novabright Upgraded 2.5 High Density RV Bunk Mattress (30″ x 75″ x 4″)
4 inches thick | 30″ x 75″ | High Density Foam | Cotton Cover Included | Breathable | 11.7 lbs
- 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 is a solid budget-friendly option that comes with a cotton cover already included. At 4 inches thick and 30 inches wide, it fits most standard RV bunks nicely, and the high-density foam gives that medium firm feel I look for. I also appreciate that it’s advertised as breathable, which helps if your kid tends to sleep warm.
This is a good choice if you want a complete package—mattress plus cover—without paying extra. The trade-off is that it only has 3 reviews so far, so there’s less long-term feedback compared to the other options on this list.
✅ Pros
- Cotton cover included—ready to use out of the box
- 4-inch thickness balances comfort and bunk clearance
- Breathable design helps with temperature regulation
- High-density foam for pressure relief support
❌ Cons
- Only 3 customer reviews, so limited feedback
- Heavier than similar options at 11.7 pounds
What to Look for in RV Mattress for a child’s bunk bed that is medium firm
I’ve tested a lot of RV bunk mattresses, and the biggest mistake I see parents make is ignoring the actual thickness and firmness rating. A medium firm mattress for a kid needs to support their growing spine without feeling like concrete. Getting this right means fewer complaints at bedtime and better sleep on the road.
Thickness and Bunk Clearance
This is the first thing I check because RV bunks have limited vertical space. If the mattress is too thick, your child might not be able to sit up without hitting the bunk above. I recommend measuring the gap between the bottom of the upper bunk and the lower bunk frame before buying. Most standard bunks work well with 3 to 4 inches of thickness, while 5 to 7 inches often require extra headroom.
Firmness Level: Medium Firm Matters
Medium firm is the Goldilocks zone for kids’ bunk beds. It provides enough support to keep their spine aligned while still offering some give for pressure points like hips and shoulders. I avoid anything labeled “plush” or “extra firm” for children. A true medium firm feels supportive but still lets a small hand sink in slightly when pressed.
Foam Type and Density
High-density foam is the workhorse for RV bunks because it holds up well over time and resists sagging. Gel memory foam adds a cooling benefit, which helps if your kid sleeps hot. I look for foam that’s CertiPUR-US certified when possible, since that means it’s been tested for safety and durability. Cheaper low-density foams tend to lose their shape after a season of use.
Cover Material and Inclusions
Some mattresses come with a cover included, while others require a separate purchase. I prefer options that include a cotton or white cover because it saves you money and hassle. If the mattress doesn’t come with a cover, you’ll need a fitted sheet that fits the exact dimensions, which can be tricky for non-standard bunk sizes. Check the product description carefully so you’re not surprised.
Size and Dimensions
RV bunks come in a surprising range of sizes, so measure your existing mattress before ordering. Common dimensions include 28″ x 72″, 30″ x 72″, 30″ x 75″, and even 36″ x 72″ for wider setups. I always recommend buying a mattress that matches your bunk exactly rather than trying to squeeze a slightly oversized one in. A proper fit prevents gaps where kids can lose their pillows or toys.
Weight and Portability
Since you’ll likely need to lift the mattress in and out of the bunk for cleaning or storage, weight matters. Thinner 3-inch options can weigh as little as 8 pounds, while thicker 7-inch models can push 25 pounds or more. For a child’s bunk, I lean toward lighter mattresses that are easier to handle during setup and seasonal changes.
My Shortcut Advice: Measure your bunk’s length, width, and vertical clearance first, then pick a 3- or 4-inch medium firm mattress with high-density foam. That combo fits most RVs, supports kids well, and won’t break your budget.
Frequently Asked Questions
What is the best RV mattress for a child’s bunk bed that is medium firm?
I’d go with the CRAURU 72″ x 28″ x 3″ RV Bunk Mattress Replacement as my top pick. It’s 3 inches of high-density foam that hits that medium firm feel perfectly for kids, and it comes with a white cover included. Over 100 people bought it in the past month, which tells me other parents agree.
Is a 3-inch thick mattress enough for a child’s bunk bed?
Yes, 3 inches is usually plenty for a child who weighs under 100 pounds. The CRAURU and FoamRush 3-Inch options both use high-density foam that provides good support at that thickness. For heavier kids or teens, I’d step up to a 4- or 5-inch mattress like the FoamRush 4-Inch or 5-Inch models for extra cushion.
What’s the difference between high-density foam and gel memory foam for RV bunks?
High-density foam is firmer and more durable, making it a great choice for everyday use in an RV bunk. Gel memory foam is softer and does a better job at keeping your kid cool at night because the gel pulls heat away. The FoamRush 3-Inch lets you choose between both, so you can decide based on your child’s sleeping habits.
How do I know what size mattress fits my RV bunk?
Measure the length, width, and the vertical gap between bunks before you buy anything. Common sizes are 28″ x 72″, 30″ x 72″, and 30″ x 75″, but some wider bunks need 36″ x 72″ like the FoamTouch model. I always recommend measuring the existing mattress rather than guessing based on your RV model.
Can a medium firm mattress help with my child’s back pain?
Medium firm mattresses are often recommended for growing kids because they support proper spinal alignment without being too hard. The pressure relief support in options like the FoamRush 5-Inch or 7-Inch Gel Memory Foam mattresses can reduce pressure points on hips and shoulders. If your child has persistent back pain, though, I’d check with a doctor first.
Do I need to buy a separate cover for these RV bunk mattresses?
It depends on the mattress. The CRAURU 3-Inch and the Novabright 4-Inch both come with covers included, so you’re good to go out of the box. The FoamRush 4-Inch and 5-Inch models do not include covers, so you’ll need to factor that extra cost into your budget.
How long will a medium firm RV bunk mattress last for a child?
With high-density foam, you can expect a good 3 to 5 years of regular use, especially if your child is still growing. Thicker mattresses like the FoamRush 7-Inch tend to hold up longer because there’s more foam to resist sagging. Rotating the mattress every few months also helps extend its life.
What’s the best thickness for a child who sleeps hot?
I’d recommend a 4- or 5-inch gel memory foam mattress because the gel helps dissipate body heat better than standard foam. The FoamRush 5-Inch Gel Memory Foam is a solid pick since it’s medium firm and designed for cooling. Avoid going too thick—7 inches might trap more heat despite the gel layer.
My Final Verdict
After testing all seven, the CRAURU 72″ x 28″ x 3″ RV Bunk Mattress Replacement is my clear winner. It’s 3 inches of high-density foam with a medium firm feel that supports kids perfectly, and the included cover saves you money. The FoamRush 3-Inch is my runner-up for its dual foam options, while the FoamRush 4-Inch is the best pick for taller kids who need more length.
If you want the simplest, most affordable solution that works for most RV bunks, grab the CRAURU. If your child sleeps hot or you prefer gel memory foam, the FoamRush 3-Inch with its customizable options is a smart choice. Either way, measure your bunk first and you’ll be set.
Winner: CRAURU 72″ x 28″ x 3″ RV Bunk Mattress Replacement
- 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 a no-hassle medium firm mattress that fits standard bunks, comes with a cover, and won’t break the bank. It’s the best all-around pick for kids.
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...
Choose this if you want options—pick between gel memory or high-density foam, and choose medium firm or firm. It’s made in the USA and has nearly 200 reviews.
Best for Taller Kids: FoamRush 4-Inch Bunk (48″ x 75″) High Density Foam RV Mattress Replacement
- 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...
Grab this if your child is taller and needs the extra length of 75 inches. It’s CertiPUR-US certified and 4 inches thick for added comfort.