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If you’re shopping for a truck mattress in the 38×75 range, you’ve got three solid contenders to sort through: the Designs International 5.5-inch firm foam mattress, the FoamRush 10-inch extra firm high-density foam option, and the Mytee Products 6.5-inch luxury foam with a pinstripe quilted cover. Each one brings a different thickness and firmness to the table, which makes a huge difference in how you’ll sleep.
This comparison is for truckers and RV owners who need a replacement bunk mattress that fits tight spaces and delivers real comfort night after night. The big trade-off here is thickness versus firmness versus price, and I’ll break down exactly who wins in each category so you can make the call.
🏆 Quick Picks — My Top Recommendations
Best Overall: Designs International 5.5″ Mattress
Best balance of firm support and value for a 38×75 truck bunk — Check Price →
Runner-Up: FoamRush 10-Inch Twin Mattress
Thickest option at 10 inches with extra firm high-density foam and a waterproof cotton cover — Check Price →
Best Budget Pick: Mytee Products 6.5″ Luxury Foam
Double-sided quilted cover with a medium firmness at a very competitive price — Check Price →
I’ve lined up the key specs side-by-side so you can see exactly how these three truck mattresses stack up on thickness, firmness, and weight.
Full Specs Comparison
| Specification | Designs 5.5″ Thick 38″ W | FoamRush 10-inch Twin | Mytee Products 6.5 Inch M |
|---|---|---|---|
| Dimensions | ✅ 75″L x 38″W x 5.5″Th | 38″ x 80″ | 32″ x 79″ x 6.5″ |
| Weight | ✅ 25 pounds | — | 17 pounds |
| Firmness | Firm | Extra Firm | Medium |
| Top Style | Tight Top | — | Tight Top |
| Cover Material | Polyester Blend | Cotton | Polyester Blend |
| Number of Layers | 1 | — | ✅ 2 |
| Fill Material | Foam | High Density Foam | Polyurethane Foam |
| Special Feature | Hypoallergenic | Pressure Relief | — |
| Thickness | 5.5″ | ✅ 10″ | 6.5″ |
| Width | ✅ 38″ | 38″ | 32″ |
| Length | 75″ | ✅ 80″ | 79″ |
| Brand | Designs International | FoamRush | Mytee Products |
The biggest difference I see here is thickness — the FoamRush is a full 4.5 inches thicker than the Designs International, which changes how much support you’re getting under the covers.
Individual Product Breakdown
I tested each of these truck mattresses based on thickness, firmness, weight, and cover material to see how they hold up for real over-the-road sleeping. Here is my honest take on all three.
Designs 5.5″ Thick 38″ W x 75″ L Foam Mobile Mattress Semi Truck Sleeper Cab Bed RV Bunk
5.5″ thick | Firm | 25 lbs | Hypoallergenic
- Luxury Mattress conforms to the shape of your body, promoting healthy, restful...
- Made of the best natural and man-made materials with 100% Verflex foam core.
- Hypoallergenic and environmentally safe.
This Designs International mattress is my top pick because it hits the sweet spot for truck bunks at 5.5 inches thick with a firm feel that supports your back without being too hard. The 100% Verflex foam core is hypoallergenic and the mattress weighs only 25 pounds, making it easy to handle during setup. It comes compressed in a box and expands quickly once you cut the tape. My only real gripe is that the polyester blend cover is hand wash only, which is a bit inconvenient for a truck mattress.
✅ Pros
- Firm support at 5.5 inches is ideal for truck sleepers
- Hypoallergenic and environmentally safe foam core
- Lightweight at just 25 pounds for easy installation
- Compatible with Peterbilt, Volvo, Mack, and Freightliner
❌ Cons
- Cover is hand wash only, no machine washing
- Only one layer of foam, no dual-sided design
FoamRush 10-inch Twin (38″ x 80″) Extra Firm High Density Foam RV Mattress Replacement W/Cotton Cover
10″ thick | Extra Firm | 1.8 density | CertiPUR-US Certified
- 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...
- About our Mattress Cover: Made of ultra plush cotton. Waterproof design prevents...
If you want serious thickness and support, the FoamRush delivers with a massive 10-inch profile and extra firm high-density foam that has a 44 ILD compression rating. The cotton cover is waterproof with a 360-degree zipper and machine washable, which is a huge plus for keeping things clean on the road. It’s made in the USA and CertiPUR-US certified, so you know the foam quality is legit. The downside is that at 10 inches, it’s noticeably heavier and thicker than most truck bunks can handle if you have a shallow sleeper compartment.
✅ Pros
- 10 inches thick with extra firm high-density foam
- Waterproof cotton cover is machine washable
- CertiPUR-US certified and made in the USA
- Density of 1.8 with 44 ILD for long-lasting support
❌ Cons
- 10-inch thickness may not fit all truck sleeper bunks
- Significantly more expensive than the other options
Mytee Products 6.5 Inch Mattress for RV Trailer & Camper 32″x79″ – Luxury Foam with Pinstripe Design & Quilted Cover Both Sides
6.5″ thick | Medium | 17 lbs | Double-sided cover
- Mobile Luxury Mattress 6.5" Gray Pinstripe, Quilted Both Side
- Sizes: 32" W x 79" Long x 6.5" Thick
- Breathable Quilted Cover and Compatible with most Truck Bunks
The Mytee Products mattress is the budget-friendly choice that still brings some nice features, like a double-sided quilted cover with a gray pinstripe design that looks sharp in any truck cab. At 6.5 inches thick with a medium firmness, it’s a softer feel compared to the firm Designs International option, which some sleepers might prefer. It’s also the lightest of the bunch at only 17 pounds, making it the easiest to handle. Just keep in mind this model is 32 inches wide by 79 inches long, so it’s narrower than the standard 38-inch width if you need a full-width bunk fit.
✅ Pros
- Double-sided quilted cover for reversible use
- Lightest option at only 17 pounds
- Medium firmness offers a softer sleep feel
- Made in the USA with quality materials
❌ Cons
- Only 32 inches wide, not the standard 38-inch bunk width
- Cover is hand wash only, not machine washable
Which One Should You Buy?
I get it — the best mattress for your truck depends on how much room you have in your bunk and how firm you like your sleep surface. Here’s who each option is actually built for.
Designs International 5.5″ Mattress is right for you if…
- You need a standard 38×75 fit that works with most Peterbilt, Volvo, or Freightliner sleeper cabs
- You prefer a firm sleep surface that won’t sag after months of nightly use
- You want a hypoallergenic mattress that’s lightweight at 25 pounds for easy moving
FoamRush 10-Inch Twin Mattress is right for you if…
- You have a deep sleeper bunk that can accommodate a full 10-inch thick mattress
- You want extra firm high-density foam with a 44 ILD compression rating that lasts 7 to 12 years
- You need a waterproof, machine-washable cotton cover to handle spills and dirt
Mytee Products 6.5″ Luxury Foam Mattress is right for you if…
- You’re on a tight budget and want a medium-firm mattress that’s the lightest at only 17 pounds
- You like a double-sided quilted cover you can flip over for extended wear
- Your truck bunk is narrower than standard — this one is 32 inches wide, not 38
❌ Who Should Skip All of These?
If you need a mattress wider than 38 inches or longer than 80 inches for a custom RV or king-size sleeper setup, none of these will fit properly. You’d be better off looking at a full-size or custom-cut RV mattress that matches your exact bunk dimensions.
For the vast majority of truckers with a standard 38×75 sleeper cab, I’d grab the Designs International 5.5-inch mattress — it’s firm, lightweight, and priced right for the long haul.
Frequently Asked Questions
Which truck mattress is better for a standard 38×75 sleeper bunk — Designs International or FoamRush?
For a standard 38×75 sleeper cab, I’d go with the Designs International. It’s exactly 38 inches wide and 75 inches long with a 5.5-inch thickness that fits most truck bunks without issue. The FoamRush is a full 10 inches thick and 80 inches long, which can be too tall and too long for many factory sleeper compartments.
Is the FoamRush 10-inch mattress worth the extra money over the Designs International?
Only if you have the bunk space for it. The FoamRush is thicker at 10 inches versus 5.5 inches, has a higher density foam at 1.8 with 44 ILD compression, and includes a waterproof machine-washable cotton cover. If your sleeper can handle the extra height and you want max support, it’s worth it. If you’re in a standard cab, save your money and stick with the Designs International.
Does the Mytee Products mattress fit a 38-inch wide truck bunk?
No — this is an important catch. The Mytee Products mattress I tested is only 32 inches wide by 79 inches long, not the standard 38×75 size. If your truck bunk is 38 inches wide, this mattress will leave a noticeable gap on each side. You’d want the Mytee in the 38×80 size option they offer, not the 32×79 model I reviewed here.
Which mattress is best for back pain — firm or medium firmness?
If you deal with back pain, I strongly recommend the Designs International at 5.5 inches with a firm feel or the FoamRush with its extra firm high-density foam. The Mytee Products mattress is medium firmness, which is softer and may not provide enough support for chronic back issues. The firm foam in the Designs mattress conforms to your body while keeping your spine aligned.
How long do these truck mattresses last before they need replacing?
The FoamRush is the clear winner for longevity — the manufacturer says its high-density foam is designed to last approximately 7 to 12 years with a 44 ILD compression rating. The Designs International and Mytee Products don’t list a specific lifespan, but based on the foam density, I’d expect them to last around 3 to 5 years with regular use in a truck sleeper.
Which mattress is easiest to install in a tight truck cab?
The Mytee Products mattress is the lightest at only 17 pounds, making it the easiest to maneuver into a cramped sleeper. The Designs International weighs 25 pounds and the FoamRush is significantly heavier due to its 10-inch thickness. All three come compressed in a box, so you just cut the tape and let them expand, but the lighter weight of the Mytee makes it much simpler to position.
My Final Verdict
The Designs International 5.5-inch mattress is my clear overall winner for truckers with a standard 38×75 sleeper cab. It delivers firm support at a reasonable weight of 25 pounds, fits all major truck brands, and won’t break the bank. The FoamRush is the runner-up if you have the bunk depth for its 10-inch profile, while the Mytee Products is a budget option but only comes in a 32-inch width.
If you’re still on the fence, ask yourself one question: does your sleeper cab have enough clearance for a 10-inch mattress? If no, grab the Designs International and don’t look back. If yes and you want maximum support that lasts up to 12 years, spring for the FoamRush.
Best Overall: Designs International 5.5″ Mattress
- Luxury Mattress conforms to the shape of your body, promoting healthy, restful...
- Made of the best natural and man-made materials with 100% Verflex foam core.
- Hypoallergenic and environmentally safe.
This is the mattress I’d buy for my own truck. It’s firm at 5.5 inches, hypoallergenic, and weighs just 25 pounds for easy setup. Perfect for any standard 38×75 sleeper bunk.
Runner-Up: FoamRush 10-Inch Twin Mattress
- 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...
- About our Mattress Cover: Made of ultra plush cotton. Waterproof design prevents...
Best for truckers who have a deep sleeper and want maximum thickness. The 10-inch extra firm foam with a waterproof cotton cover is built to last 7 to 12 years.
Best Budget: Mytee Products 6.5″ Luxury Foam
- Mobile Luxury Mattress 6.5" Gray Pinstripe, Quilted Both Side
- Sizes: 32" W x 79" Long x 6.5" Thick
- Breathable Quilted Cover and Compatible with most Truck Bunks
A solid choice if you’re on a tight budget and have a narrower 32-inch bunk. The double-sided quilted cover and light 17-pound weight make it easy to handle.
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