A 34 x 75-inch RV mattress is a custom bunk size, not the same as every standard twin. Measure your sleeping platform before you buy, and check both the mattress thickness your bed frame can accommodate and the firmness you prefer. These five options include gel memory foam and firm high-density foam, with different thicknesses and features to compare.
| Mattress | Thickness | Construction | Best fit |
|---|---|---|---|
| FoamRush Gel Memory Foam Bunk Mattress | 4 inches | Ventilated gel memory foam over high-density support foam | A thinner, medium-firm replacement |
| FoamRush 6-Inch Gel Memory Foam Bunk Mattress | 6 inches | Gel memory foam and support foam | More mattress height; listing may be unavailable |
| Kogler Gel-Infused RV Mattress Set | 6 inches | Gel memory foam over a high-density foam core; includes a pillow | A ready-to-use set with a cloth cover |
| Foamma Firm RV Bunk Mattress | 4 inches | Firm, high-density foam | Shoppers who prefer a firmer feel |
| FoamRush 7-Inch Cooling Gel Bunk Mattress | 7 inches | Ventilated gel memory foam over support foam | A thicker option; listing may be unavailable |
Our Picks: Best Rv Twin Mattress 34 X reviews
FoamRush 4-Inch Gel Memory Foam: A Low-Profile Medium-Firm Pick
This FoamRush mattress measures 34 x 75 inches and is 4 inches thick. Its construction combines ventilated gel memory foam with high-density support foam, and the product is described as medium firm. That makes it a useful option if you want a foam feel without adding as much height as a 6- or 7-inch mattress.
The slim profile may work well in an RV bunk where clearance is limited, but measure the bed frame and surrounding space first. The foam is also described as customizable with cutting tools. That can help if your platform has an unusual shape, though cutting a mattress takes care and may affect how neatly it fits or looks.
Compared with the thicker FoamRush models, this one provides less overall depth. Its two-layer design offers more than a single piece of basic foam, but shoppers seeking a deeper cushion may prefer the 6-inch Kogler or 7-inch FoamRush options. A cover is available upon request according to the product details, so confirm what is included before ordering.
Pros:
- Exact 34 x 75-inch bunk size
- Ventilated gel memory foam over high-density support foam
- Medium-firm feel, according to the product description
- Foam can be trimmed for a custom fit
Cons:
- Four-inch thickness may feel too thin for shoppers wanting a deeper mattress
- Confirm whether a cover is included; the description says one is available upon request
Verdict: Choose this FoamRush if you need a 34 x 75-inch mattress with a low profile and a medium-firm, layered foam design.
FoamRush 6-Inch Gel Memory Foam: A Deeper Bunk Mattress
This 34 x 75-inch FoamRush model adds two inches of thickness over the 4-inch version. It is a gel memory foam RV mattress intended for bunk use, and the product details describe the foam as CertiPUR-US certified and made in the USA. It is also designed to be cut or shaped for custom projects.
The extra height may appeal if a 4-inch mattress seems too shallow, but it is important to check the bunk’s side rails, guardrails, and available clearance before choosing a thicker replacement. The product instructions also advise letting compressed foam expand before cutting it, so plan for setup time and follow the care directions on the listing.
The supplied product information marks this listing as unavailable, so verify that it can be ordered before making it your plan. If it is not available, the 6-inch Kogler offers the same listed dimensions and includes a cover and pillow, while the FoamRush 4-inch is a thinner alternative.
Pros:
- 34 x 75-inch size with a 6-inch profile
- Gel memory foam construction for RV bunk use
- Product details state that the foam is CertiPUR-US certified
- Can be customized by cutting, according to the product description
Cons:
- The supplied listing information marks the product as unavailable
- Six-inch thickness may not suit bunks with limited clearance
Verdict: Consider this FoamRush if you want a 6-inch foam mattress and confirm the listing is available, along with the clearance of your bunk.
Kogler 6-Inch RV Mattress Set: A Covered Option with Pillow
The Kogler is a 6-inch, 34 x 75-inch RV mattress made for custom-width sleeping spaces. It pairs a gel-infused memory foam comfort layer with a 2.0 lb high-density foam base. The set also includes a gray cloth cover and a standard foam pillow, which makes it a more complete package than the mattress-only options here.
It is shipped vacuum-sealed and rolled to make handling easier in tight RV spaces. The product description says it should be unboxed and unrolled to expand. As with any compressed mattress, allow it time to recover before judging its final shape or fit.
Compared with the 6-inch FoamRush, the Kogler clearly lists a cloth cover and pillow as included, while the FoamRush description focuses on customizable foam. The Kogler is not described as cut-to-fit, so check your platform measurements and shape carefully before buying. Its 6-inch height also needs to work with the bunk’s available clearance.
Pros:
- Listed 34 x 75-inch dimensions and 6-inch thickness
- Includes a gray cloth cover and standard foam pillow
- Combines gel-infused memory foam with a high-density foam base
- Ships rolled for easier handling through narrow spaces
Cons:
- Six-inch height may be too tall for some RV bunks
- The description does not specify that the mattress can be cut to fit
Verdict: Pick the Kogler if you want a 6-inch 34 x 75-inch mattress with a cloth cover and pillow included, and your bunk can accommodate its height.
Foamma 4-Inch Firm Mattress: A Straightforward High-Density Foam Choice
Foamma’s mattress measures 34 x 75 inches and is 4 inches thick. Unlike the gel memory foam models, it is described as firm high-density foam, with a listed density of 1.8 and a compression rate of 44 pounds. The product information also states that it is made in the USA and CertiPUR-US certified.
This simpler foam construction may suit someone who prefers a firmer surface or wants to replace a worn RV bunk mattress without adding extra height. The listed firmness is a useful guide, but comfort is personal; shoppers who want a softer, contouring top layer may prefer one of the gel memory foam options.
Foamma says it offers custom sizes, which may be helpful if your bunk is close to, but not exactly, the listed dimensions. Confirm the details with the seller before ordering a custom size. The product description gives a projected lifespan, but actual durability can depend on use and conditions, so treat that figure as the manufacturer’s estimate rather than a guarantee.
Pros:
- Four-inch profile for bunks with limited clearance
- Firm, high-density foam construction
- Product details state that it is CertiPUR-US certified and made in the USA
- Custom sizing may be available through the seller
Cons:
- Firm feel may not suit people who prefer a softer, contouring mattress
- Does not list a gel memory foam comfort layer
Verdict: Choose the Foamma if you want a firm, 4-inch foam mattress and value its stated certification and custom-size option.
FoamRush 7-Inch Cooling Gel Mattress: The Thickest Option Here
This FoamRush mattress measures 34 x 75 inches and is 7 inches thick, making it the tallest option in this comparison. Its described construction pairs ventilated gel memory foam with high-density support foam. The product is intended for RV bunk replacement and is described as medium firm.
That extra depth may be appealing if you want more mattress height than the 4-inch models offer. However, in an RV bunk, more thickness is not always an advantage: check how much room remains beneath any guardrail and whether fitted bedding will still work. FoamRush also describes its foam as customizable, but trimming it is a hands-on task.
The supplied product information marks this listing as unavailable, so check the listing before relying on it. If it cannot be ordered, the 4-inch FoamRush provides a similar gel-and-support-foam design in a lower profile, while the Kogler is a 6-inch option with a cover and pillow included.
Pros:
- Seven-inch profile for shoppers seeking a thicker mattress
- Ventilated gel memory foam over high-density support foam
- Medium-firm feel according to the product description
- Foam can be customized by cutting, according to the listing
Cons:
- The supplied listing information marks the product as unavailable
- Seven inches may be too tall for many bunk setups
Verdict: This is the option to consider if you specifically want a 7-inch gel memory foam mattress, but confirm availability and measure your bunk clearance first.
How to Choose a 34 x 75 RV Mattress
Measure the Bunk, Not Just the Old Mattress
Measure the platform’s length and width, and compare those measurements with the mattress dimensions. An old mattress may have compressed or shifted, so it may not show the true size of the bed frame. Also check for rounded corners, cutouts, or other unusual shapes. If your bunk is not a clean rectangle, ask the seller about custom sizing before ordering.
Check Mattress Thickness and Bunk Clearance
These options range from 4 to 7 inches thick. A thicker mattress can change how much space remains beneath a guardrail or above the sleeper, and it may affect how the mattress sits inside a raised frame. Measure the available height and consider any bedding you plan to use. Do not assume a thicker mattress will fit just because its length and width match.
Choose Foam Feel for Your Comfort Preference
The FoamRush models and Kogler use gel memory foam with support foam. Their descriptions focus on a medium-firm feel or a balance of contouring and support. Foamma is described as firm, high-density foam and does not list a memory foam comfort layer. If you already know you prefer a firmer surface, that distinction can help narrow the choices.
Decide Whether You Need a Cover or Pillow
The Kogler description says a gray cloth cover and standard foam pillow are included. The FoamRush 4-inch listing says a cover is available upon request, so verify what comes with an order. The other product descriptions do not identify a cover as included. Check the full listing details if you need a ready-to-use setup or want to avoid buying bedding separately.
Consider Customization Carefully
FoamRush describes its foam as easy to cut with suitable tools, and Foamma says custom sizes may be available. Cutting can help with an unusual fit, but it is best to measure twice and allow compressed foam to expand before trimming it. For a shaped platform or a size that differs from 34 x 75 inches, contacting the seller about a custom order may be a safer approach.
Review Certification and Product Details
The product descriptions for the 6-inch FoamRush and Foamma state that their foam is CertiPUR-US certified. Compare the listing details for each product, including its materials, included items, care instructions, and return terms. Availability can change, so confirm that the mattress you choose can be ordered before making plans around it.
Frequently Asked Questions
Is a 34 x 75 mattress a standard twin?
It is a specific RV bunk size and may not match a standard twin mattress. Check your platform’s measurements rather than relying on the word “twin” in a product title.
Which thickness should I choose for an RV bunk?
Choose a thickness that fits the bunk’s space and your comfort needs. The options here range from 4 to 7 inches. Measure the frame and any guardrail clearance before deciding.
What is the difference between gel memory foam and firm foam?
The gel memory foam options combine a comfort layer with support foam and are described as medium firm or contouring. The Foamma model is described as firm, high-density foam without a listed gel memory foam layer. The right choice depends on your preferred feel.
Can I cut a 34 x 75 foam mattress to fit?
The FoamRush descriptions say the foam can be cut and customized. Foamma says custom sizes may be available. Follow the product instructions, allow compressed foam to expand first, and contact the seller if you are unsure about changing the mattress size.
Does the Kogler mattress include a cover and pillow?
Yes. Its supplied product description lists a gray cloth cover and a standard foam pillow as included with the 6-inch mattress.
Are the FoamRush 6-inch and 7-inch models available?
The supplied product information marks both listings as unavailable. Check the Amazon listing for current ordering status before choosing either one.
Final Recommendation
For a low-profile 34 x 75-inch mattress with a medium-firm gel memory foam design, the FoamRush 4-inch model is a practical starting point. If you want a firmer surface, consider the Foamma. If you prefer a thicker mattress and want a cover and pillow included, the Kogler is the most complete listed set. Whichever you choose, confirm the exact dimensions, thickness clearance, included items, and availability before ordering.