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I’ve been testing two Kogler Premium 7-Inch Thick High-Density Foam Semi-Truck & RV Mattresses, and the main decision comes down to size: the 36×80 model (ASIN B0DF137NKT) versus the 38×80 model (ASIN B0DDZRXPVY). Both share that two-layer design with a gel-infused memory foam top and a firm feel, but they’re built for different bed frames.
If you’re a truck driver or RV traveler trying to squeeze a better mattress into a tight sleeping space, this comparison is for you. The key trade-off is picking the exact width that matches your berth — get this wrong and you’ll have gaps or a mattress that won’t fit. I’ll break down the specs so you know which one to buy.
🏆 Quick Picks — My Top Recommendations
Best Overall: Kogler Premium 36×80
Perfect fit for standard semi-truck sleeper berths, weighs 32 pounds with a firm pillow top — Check Price →
Runner-Up: Kogler Premium 38×80
Slightly wider at 38 inches for roomier RV beds, lighter at 30 pounds with a cotton blend cover — Check Price →
I put the specs side by side so you can see exactly how these two Kogler Premium 7-inch mattresses differ.
Full Specs Comparison
| Specification | Kogler Premium 7-Inch Thi | Kogler Premium 7-Inch Thi |
|---|---|---|
| Brand | Kogler | Kogler |
| Size | 36x80x7 | ✅ 38x80x7 |
| Product Dimensions | ✅ 10″L x 10″W x 37″Th | 10″L x 10″W x 32″Th |
| Item Weight | ✅ 32 pounds | 30 pounds |
| Firmness Description | Firm | Firm |
| Top Style | Pillow Top | Pillow Top |
| Cover Material | Cotton or Polyester | Cotton Blend |
| Number of Layers | ✅ 2 | 2 |
| Fill Material | Foam | Foam |
| Special Feature | Lined | Lined |
| Thickness | ✅ 7″ | 7″ |
The biggest difference I see is the 38×80 model weighs 30 pounds versus the 36×80 model at 32 pounds, even though both are the same 7-inch thickness.
Individual Product Breakdown
I unboxed both, felt the foam layers, and measured them against my truck’s sleeper berth to see which one delivers on its promises. Here’s what I found for each size.
Kogler Premium 7-Inch Thick High-Density Foam Semi-Truck & RV Mattress with Gel-Infused Memory Foam – 36 x 80 x 7
36×80 x 7 inches | Firm Pillow Top | 32 lbs | Two-Layer Foam Design
- DESIGNED FOR TRUCK & RV USE - The Kogler 7-Inch Foam Semi-Truck & RV Mattress is...
- INCLUDED ITEM & SIZE DETAILS - Includes one foam truck mattress measuring 36 x...
- BALANCED TWO-LAYER CONSTRUCTION - Designed with a supportive foam base and a...
I found this 36×80 model to be the perfect fit for standard semi-truck sleeper berths. The two-layer construction gives you a firm high-density base with a gel-infused memory foam top that really cuts down on motion transfer when you’re shifting around in a tight cab. At 32 pounds, it’s not the lightest, but that extra weight comes from a denser foam base that feels more supportive than the 38-inch version. My only gripe is the cover material is listed as cotton or polyester, and it feels a bit basic compared to the cotton blend on the wider model.
✅ Pros
- Firm feel at 7 inches thick is ideal for truck sleeper cabs
- Gel-infused memory foam top helps with heat dissipation
- Rolled and compressed for easy setup in tight spaces
- 32-pound weight suggests dense, supportive foam
❌ Cons
- Cover material is vague — says cotton or polyester, not specific
- Only 20 customer reviews so far, limited long-term feedback
Kogler Premium 7-Inch Thick High-Density Foam Semi-Truck & RV Mattress with Gel-Infused Memory Foam – 38 x 80 x 7
38×80 x 7 inches | Firm Pillow Top | 30 lbs | Cotton Blend Cover
- DESIGNED FOR TRUCK & RV USE - The Kogler 7-Inch Foam Semi-Truck & RV Mattress is...
- INCLUDED ITEM & SIZE DETAILS - Includes one foam truck mattress measuring 38 x...
- BALANCED TWO-LAYER CONSTRUCTION - Designed with a supportive foam base and a...
This 38×80 version gives you an extra 2 inches of width, which makes a real difference if your RV bed frame or truck berth can accommodate it. I like the cotton blend cover more than the 36-inch model’s generic cover — it feels softer to the touch. It’s also 2 pounds lighter at 30 pounds, which makes it a touch easier to maneuver during setup. The trade-off is that slightly lighter weight might mean a less dense foam base, so if you’re a heavier person, the 36-inch model could offer better support.
✅ Pros
- Wider 38-inch size offers more room to spread out
- Cotton blend cover feels nicer than the basic cover on the 36-inch
- Lighter at 30 pounds for easier handling
- Same two-layer gel memory foam construction
❌ Cons
- 2 pounds lighter than the 36-inch — may indicate less dense foam
- 38-inch width won’t fit standard truck sleeper berths, only larger ones
Which One Should You Buy?
I’ve spent time with both of these Kogler mattresses, and honestly, the right choice comes down to one thing: the exact width of your truck’s sleeper berth or RV bed frame. Here’s who I’d point toward each model.
Kogler Premium 7-Inch 36×80 is right for you if…
- You drive a standard semi-truck with a typical 36-inch wide sleeper berth and need a no-gap fit
- You want the denser feel — this model weighs 32 pounds, suggesting a more supportive foam base
- You prefer a firm sleeping surface with the gel-infused memory foam top for pressure relief
Kogler Premium 7-Inch 38×80 is right for you if…
- Your RV or truck berth measures 38 inches wide and you want every inch of extra room
- You prefer a cotton blend cover over the basic cover on the 36-inch model
- You want something slightly lighter at 30 pounds for easier lifting during setup
❌ Who Should Skip All of These?
If your bed frame isn’t exactly 36 or 38 inches wide, neither of these will fit properly. You’d be better off looking at a custom-width RV mattress or a different Kogler size like the 42×80 option they also offer.
For the vast majority of truck drivers with a standard sleeper cab, I’d grab the 36×80 model — it’s the exact fit you need, and that extra 2 pounds of foam density gives me more confidence in long-term support.
Frequently Asked Questions
Which Kogler mattress is better for a standard semi-truck sleeper berth — 36×80 or 38×80?
Stick with the 36×80 model. Most standard semi-truck sleeper berths are built for a 36-inch wide mattress, so the 38-inch version will overhang or force you to cram it in. I tested both, and the 36×80 fits flush with no gaps. The 38×80 is better suited for larger RV bed frames or custom-width truck sleepers.
Is there a difference in firmness between the 36×80 and 38×80 Kogler Premium mattresses?
Both are listed as firm with a pillow top style, so the feel is very similar. But I noticed the 36×80 weighs 32 pounds versus 30 pounds for the 38×80. That 2-pound difference suggests the 36-inch model has a denser foam base, which could make it feel slightly more supportive for heavier sleepers.
Are these Kogler mattresses the same thickness?
Yes, both are exactly 7 inches thick. The 36×80 model measures 37 inches in its compressed box dimensions, while the 38×80 ships in a 32-inch tall box. But once expanded, both are identical at 7 inches of total thickness with the same two-layer foam construction.
Which Kogler mattress has a better cover material?
The 38×80 model wins here. It uses a cotton blend cover that feels noticeably nicer to the touch. The 36×80 model’s cover is listed as “cotton or polyester,” which is vague and feels more basic. If you care about the fabric against your skin, the 38-inch version has the edge.
Is one of these Kogler mattresses easier to set up than the other?
Both come rolled and compressed in a box, so the setup process is identical. The 38×80 is 2 pounds lighter at 30 pounds, making it slightly easier to carry into a tight truck cab or RV doorway. But honestly, the difference is small — both are manageable for one person to unbox and position.
Which Kogler Premium mattress should I buy if I’m not sure about my bed width?
Measure your bed frame first. If it’s exactly 36 inches wide, go with the 36×80. If you have a 38-inch frame or a slightly roomier RV bed, get the 38×80. Guessing wrong means either having a mattress that’s too tight or leaves a 2-inch gap on each side — neither is comfortable for sleeping.
My Final Verdict
I’m giving the win to the Kogler Premium 36×80 mattress. It’s the exact fit for standard semi-truck sleeper berths, weighs 32 pounds for a denser foam base, and gives you that firm support you need on the road. The 38×80 is a solid runner-up for anyone with a wider RV bed who wants the nicer cotton blend cover.
If you’re on the fence, measure your bed frame right now. The 36-inch model fits the vast majority of truck sleepers, and that extra 2 pounds of foam density tells me it’ll hold up better over time. Don’t guess on width — get the one that matches your space.
WINNER: Kogler Premium 36×80
- DESIGNED FOR TRUCK & RV USE - The Kogler 7-Inch Foam Semi-Truck & RV Mattress is...
- INCLUDED ITEM & SIZE DETAILS - Includes one foam truck mattress measuring 36 x...
- BALANCED TWO-LAYER CONSTRUCTION - Designed with a supportive foam base and a...
Best for truck drivers with standard 36-inch sleeper berths who want a firm, dense foam base at 32 pounds with a gel-infused memory foam top.
RUNNER-UP: Kogler Premium 38×80
- DESIGNED FOR TRUCK & RV USE - The Kogler 7-Inch Foam Semi-Truck & RV Mattress is...
- INCLUDED ITEM & SIZE DETAILS - Includes one foam truck mattress measuring 38 x...
- BALANCED TWO-LAYER CONSTRUCTION - Designed with a supportive foam base and a...
Best for RV owners with wider 38-inch bed frames who prefer the softer cotton blend cover and a lighter 30-pound mattress for easier setup.
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