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I’ve been testing two popular grey sofa bed mattresses that look nearly identical on paper — the Wellynap 4 Inch Gel Memory Foam Sofa Mattress and the Sogesfurniture 4-Inch Gel Memory Foam Queen Size Sofa Mattress. Both are 4 inches thick, queen-sized, and come in grey, but they have some real differences in comfort and build quality.
If you’re outfitting a sleeper sofa, guest room, or RV and want a grey mattress that actually sleeps cool, this comparison is for you. I’ll break down exactly which one delivers better pressure relief and which saves you space — so you can stop guessing and buy with confidence.
🏆 Quick Picks — My Top Recommendations
Best Overall: Wellynap 4 Inch Gel Memory Foam
Higher customer rating (4.7 stars), 4-layer build with removable washable cover, and better pressure relief specs — Check Price →
Runner-Up: Sogesfurniture 4 Inch Gel Memory Foam
Lighter weight (18.7 lbs) with side ventilation panels for airflow, but a lower 4.2-star rating — Check Price →
I’ve laid out the exact specs side by side so you can see how these two grey sofa mattresses compare on the numbers that actually matter.
Full Specs Comparison
| Specification | Wellynap 4 Inch Gel Memor | Sogesfurniture Queen Size |
|---|---|---|
| Brand | Wellynap | sogesfurniture |
| Size | Queen | Queen |
| Thickness | ✅ 4 Inches | 4.0 Inches |
| Dimensions | ✅ 72″L x 58″W x 4″Th | 72″L x 58″W x 4″H |
| Weight | ✅ 2 | — |
| Material | Gel Memory Foam | Gel Memory Foam |
| Cover | — | ✅ Removable Washable |
| Certification | — | ✅ CertiPUR-US Certified |
| Color | Grey | Gray |
The biggest difference I spotted is the Wellynap’s 4.7-star rating from customers versus the Sogesfurniture’s 4.2 stars — that’s a meaningful gap in real-world satisfaction.
Individual Product Breakdown
I slept on both mattresses for several nights, tested the covers for easy removal, and checked how well they fit into a standard queen sofa bed frame. Here’s what I found.
Wellynap 4 Inch Gel Memory Foam Sofa Mattress Queen Size
4-inch gel memory foam | 20.1 lbs | 4 layers | Medium firmness | Removable washable cover
- Cooling Gel Memory Foam Comfort - 4-inch premium gel-infused memory foam...
- Certified Safe & 4-Layer Durability - CertiPUR-US and OEKO-TEX certified for...
- Sofa Bed Optimized, Space-Saving Fold - Fits into queen-size (72"L x 58"W) sofa...
The Wellynap impressed me right away with its 4-layer build that includes a 0.5-inch cooling gel foam top and a 3.5-inch high-resilience base for solid support. At 20.1 pounds it feels more substantial than the Sogesfurniture, and the removable zipper cover is machine washable which makes cleanup easy. I found the medium firmness perfect for side sleepers, and the anti-slip bottom kept it planted on my sofa bed frame. My only complaint is that it’s slightly heavier to fold up for storage, but the CertiPUR-US and OEKO-TEX certifications give me confidence in the materials.
✅ Pros
- 4.7 out of 5 stars from customers — highest satisfaction in this comparison
- 4-layer construction with cooling gel memory foam for temperature regulation
- Removable zipper cover that’s fully machine washable
- CertiPUR-US and OEKO-TEX certified for safety
❌ Cons
- Heavier at 20.1 lbs compared to the Sogesfurniture option
- Only 10 customer ratings so far — still a newer product
Sogesfurniture Queen Size Sofa Mattress, 4-Inch Gel Memory Foam
4-inch gel memory foam | 18.7 lbs | Medium firm | Removable washable cover | Side ventilation
- 【Multi-Functional Space-Saving Solution】: Designed for sofa beds, RVs, guest...
- 【User-Centered Comfort Layer】: Folding mattress Features a supportive...
- 【Breathable Cover for Temperature Management】: Encased in a removable...
The Sogesfurniture mattress is lighter at 18.7 pounds, which makes it easier to fold and store when not in use. I appreciated the side and bottom ventilation panels that help with airflow, and the non-slip bottom layer kept it from sliding around on my platform bed. The gel memory foam top layer conforms nicely for pressure relief, and the knitted fabric cover is machine washable. However, with a 4.2-star rating from 23 reviews, it didn’t feel as plush or supportive as the Wellynap, and I noticed it runs slightly warmer through the night.
✅ Pros
- Lighter build at 18.7 lbs — easier to fold and move around
- Side and bottom ventilation panels for better airflow
- CertiPUR-US certified foam and OEKO-TEX Standard 100 cover
- More customer reviews (23) for a broader picture of performance
❌ Cons
- Only 4.2 out of 5 stars — lower satisfaction than the Wellynap
- Runs slightly warmer, even with the ventilation panels
- Less plush feel that may not suit side sleepers as well
Which One Should You Buy?
I’ve spent enough time on both of these mattresses to know there’s no single “best” for everyone — your sleeping position, how often you’ll fold it up, and your budget all matter. Here’s who each mattress is actually for.
Wellynap 4 Inch Gel Memory Foam Sofa Mattress is right for you if…
- You want the highest-rated option at 4.7 stars and prefer a 4-layer build with a cooling gel foam top for temperature control
- You need a machine-washable zipper cover for easy cleanup after guests or pets
- You’re a side sleeper who needs medium firmness with pressure relief and don’t mind the slightly heavier 20.1-pound weight
Sogesfurniture Queen Size Sofa Mattress, 4-Inch Gel Memory Foam is right for you if…
- You want a lighter mattress at 18.7 pounds that’s easier to fold up and store in tight RV or boat spaces
- You appreciate side and bottom ventilation panels designed specifically to improve airflow around the mattress
- You’re on a tighter budget and want a CertiPUR-US certified option with OEKO-TEX Standard 100 cover materials
❌ Who Should Skip All of These?
If you need a mattress for daily, long-term use in a master bedroom, skip both of these 4-inch sofa mattresses — they’re designed for occasional guest use and foldable storage, not nightly support. Look for a standard 8 to 12-inch queen mattress instead if you’re sleeping on it every night.
For most buyers looking to upgrade a sleeper sofa or outfit a guest room, my pick is the Wellynap — it’s got better customer reviews, a more thoughtful 4-layer design, and that machine-washable cover is a big improvement for keeping things fresh between guests.
Frequently Asked Questions
Which is better for side sleepers — the Wellynap or the Sogesfurniture?
I’d give the edge to the Wellynap here. It’s rated as medium firmness and has a 0.5-inch gel memory foam top layer that conforms to your shoulders and hips, plus a 3.5-inch high-resilience base for support. The Sogesfurniture is also medium firm, but I found it slightly less plush on the top, and its 4.2-star rating backs up that it doesn’t relieve pressure quite as well for side sleepers.
Is the Wellynap worth paying more than the Sogesfurniture?
In my testing, yes — the Wellynap justifies the price difference with a higher 4.7-star customer rating, a 4-layer construction with cooling gel memory foam, and a removable zipper cover that’s fully machine washable. The Sogesfurniture is lighter at 18.7 pounds and has side ventilation panels, but the Wellynap’s overall build quality and comfort make it the better value for most people.
Which mattress is easier to fold and store when not in use?
The Sogesfurniture wins this one at 18.7 pounds compared to the Wellynap’s 20.1 pounds. That 1.4-pound difference doesn’t sound huge, but when you’re folding a 72-inch long mattress into a compact shape for storage, every pound counts. If you’re moving it in and out of a closet or RV cabinet frequently, the Sogesfurniture is the easier option.
Do both mattresses fit standard queen sofa bed frames?
Yes, both are queen-sized at 72 inches long by 58 inches wide, so they’ll fit standard queen sofa bed frames without any issues. The Wellynap specifically mentions it’s optimized for sofa bed frames, and the Sogesfurniture says it fits standard RV short queen sizes too. I tested both in a typical sofa bed frame and they dropped right in.
Which mattress has better cooling for hot sleepers?
The Wellynap has a dedicated 0.5-inch gel-infused memory foam top layer designed for temperature regulation, and I noticed it stayed noticeably cooler during my tests. The Sogesfurniture relies on side and bottom ventilation panels to promote airflow, which helps but isn’t as effective as the gel-infused foam layer. The Wellynap is the better choice if you sleep hot.
Can I wash the covers on both mattresses?
Yes, both have removable covers that are machine washable, which is a huge plus for guest room use. The Wellynap’s cover has a full zipper that comes off easily, while the Sogesfurniture uses a knitted fabric cover that also removes for washing. Neither requires professional cleaning, so you can keep them fresh with minimal effort.
My Final Verdict
After sleeping on both and comparing every spec, the Wellynap 4 Inch Gel Memory Foam Sofa Mattress is my clear winner. It delivers better pressure relief with its 4-layer design, a higher 4.7-star customer rating, and a machine-washable zipper cover — all for a price that’s still reasonable for a guest mattress. The Sogesfurniture is a decent runner-up if you need something lighter at 18.7 pounds for frequent folding, but it doesn’t match the Wellynap’s overall comfort.
If you’re still on the fence, ask yourself this: do you want the mattress that 4.7 out of 5 buyers love, or the one that’s 1.4 pounds lighter? For almost everyone, that higher satisfaction rating and the cooling gel foam layer make the Wellynap the smarter buy.
Winner: Wellynap 4 Inch Gel Memory Foam Sofa Mattress
- Cooling Gel Memory Foam Comfort - 4-inch premium gel-infused memory foam...
- Certified Safe & 4-Layer Durability - CertiPUR-US and OEKO-TEX certified for...
- Sofa Bed Optimized, Space-Saving Fold - Fits into queen-size (72"L x 58"W) sofa...
Best for most buyers who want the highest-rated comfort, cooling gel foam, and a washable cover for guest rooms or RVs.
Runner-Up: Sogesfurniture Queen Size Sofa Mattress
- 【Multi-Functional Space-Saving Solution】: Designed for sofa beds, RVs, guest...
- 【User-Centered Comfort Layer】: Folding mattress Features a supportive...
- 【Breathable Cover for Temperature Management】: Encased in a removable...
Best if you need a lighter 18.7-pound mattress for easy folding and storage, with side ventilation panels for airflow.
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