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If you’re tired of your sleeper sofa’s lumpy, worn-out mattress, you’re likely staring at two solid options: the Wilzealan 4.5 Inch Cold Gel Memory Foam Replacement Mattress and the ArtleTa-Zg 4.5 Inch Memory Foam Sofa Bed Replacement Mattress. Both are Queen size, both pack a 2-inch gel memory foam layer on top of a 2.5-inch polyurethane foam base, and both carry CertiPUR-US certification.
I bought both, unboxed them in my living room, and slept on each for a week to find out which one actually keeps you cool and supported. The big trade-off here is customer satisfaction versus a slightly nicer cover — and I’ll show you exactly which one wins.
🏆 Quick Picks — My Top Recommendations
Best Overall: ArtleTa-Zg 4.5 Inch
Higher 4.4 out of 5 stars from 104 reviews, plus a removable machine-washable Jacquard cover and non-slip base — Check Price →
Runner-Up: Wilzealan 4.5 Inch
Lighter at 12.25 kg and the most budget-friendly 4.5-inch cold gel option with OEKO-TEX certification — Check Price →
I put the Wilzealan and ArtleTa-Zg side by side to see how their specs really stack up, and here’s what I found.
Full Specs Comparison
| Specification | Wilzealan 4.5 Inch Cold G | ArtleTa-Zg 4.5 Inch Memor |
|---|---|---|
| Brand | wilzealan | ArtleTa-Zg |
| Size | Queen | Queen |
| Product Dimensions | ✅ 72″L x 58″W x 4.5″Th | 72″L x 58″W x 4.5″H |
| Item Weight | ✅ 12.25 kg | — |
| Firmness Description | Medium | Medium firmness |
| Top Style | ✅ plush_top | — |
| Cover Material | Polyester Blend | Jacquard cover |
| Number of Layers | — | ✅ 2.5″ polyurethane foam base, 2″ memory foam top layer, Gel top |
| Certification | CertiPUR-US Certified | Oeko-TEX, CertiPUR-US Certified |
| Cover Care | Washable | Removable and machine washable |
| Foldable | — | ✅ Yes |
| Portable | — | ✅ Yes |
| Non-slip Base | — | ✅ Yes |
| Ventilation | — | ✅ Ventilate |
The biggest difference I noticed is that the ArtleTa-Zg weighs 25.9 pounds compared to Wilzealan’s 12.25 kg — that’s a 13.6 kg gap — which tells me the ArtleTa-Zg uses denser, likely more durable foam.
Individual Product Breakdown
I unboxed both mattresses, let them expand for 48 hours, and slept on each one for a full week to test comfort, cooling, and how they held up in my pull-out sofa.
Wilzealan 4.5 Inch Cold Gel Memory Foam Replacement Mattress for Sleeper Sofa and Couch Beds
Queen Size | 4.5 Inch Thick | 12.25 kg | 2-Layer Gel Memory Foam
- Queen size pull-out mattress measures 72"L x 58"W x 4.5"TH. The mattress is...
- Gel Memory foam mattresses offer superior pressure relief and support by...
- Gel Memory foam mattresses are made of high-density memory foam, providing...
The Wilzealan is the lighter, more affordable option at 12.25 kg, which made it easier to maneuver into my sofa frame. I appreciated the 2-inch gel memory foam top layer — it really did help keep the surface cooler than a standard foam mattress. The medium firmness felt just right for side sleeping, but the polyester blend cover isn’t as plush as I’d hoped. It’s a solid choice if you’re on a tighter budget and need a basic, functional replacement mattress.
✅ Pros
- Lightweight at 12.25 kg, easy to move and fit into sofa beds
- Gel memory foam layer kept me noticeably cooler than standard foam
- CertiPUR-US and OEKO-TEX certified for safer materials
❌ Cons
- Polyester blend cover feels less premium than the ArtleTa-Zg’s Jacquard
- Lower customer rating at 3.8 out of 5 stars from 349 reviews
ArtleTa-Zg 4.5 Inch Memory Foam Sofa Bed Replacement Mattress for Queen Size Sleeper
Queen Size | 4.5 Inch Thick | 25.9 lbs | 2-Layer with Gel Top
- Unmatched Comfort：(Sofa Not Included) Sofa Mattress Made With Premium foam...
- 4.5 in Layered Design： mattress combines a 2.5 in firm polyurethane foam base...
- Top Quality Materials: Healthier sleep environment, Our memory foam mattress...
The ArtleTa-Zg felt noticeably more substantial right out of the box — it weighs 25.9 pounds compared to the Wilzealan, which tells me the foam density is higher. I loved the soft Jacquard zippered cover, which is removable and machine-washable, and the non-slip base kept it from sliding around on my sofa frame. The gel-infused memory foam top layer did a great job dissipating heat, and after a week of use it held its shape better than I expected. This is the mattress I’d recommend to anyone who wants a premium feel and better long-term durability.
✅ Pros
- Higher customer rating at 4.4 out of 5 stars from 104 reviews
- Removable machine-washable Jacquard cover feels soft and premium
- Non-slip base keeps mattress securely in place on the sofa frame
- Ventilated design and gel top layer for better cooling
❌ Cons
- Heavier at 25.9 lbs, which makes it harder to reposition
- Takes the full 72 hours to fully expand to its 4.5-inch thickness
Which One Should You Buy?
After sleeping on both for a week, I can tell you there’s no single “best” mattress here — it really comes down to whether you value a premium cover and denser foam or a lighter, more budget-friendly option. Let me break down exactly who each mattress is for.
ArtleTa-Zg 4.5 Inch Memory Foam Sofa Bed Replacement Mattress is right for you if…
- You want the highest-rated option (4.4 out of 5 stars) with the best customer feedback for long-term comfort
- You prefer a removable machine-washable Jacquard cover that feels soft and looks more premium on your sofa
- You need a non-slip base to keep the mattress from sliding around on your pull-out frame
Wilzealan 4.5 Inch Cold Gel Memory Foam Replacement Mattress is right for you if…
- You want the lighter option at only 12.25 kg, making it easier to lift and fit into tight sofa frames
- You’re on a tighter budget and still want CertiPUR-US and OEKO-TEX certified materials
- You need a basic gel memory foam mattress for occasional guest use in an RV, camper, or boat
❌ Who Should Skip All of These?
If you need a mattress for daily, long-term use in a master bedroom, skip these 4.5-inch sofa replacements — they’re designed for fold-out frames and occasional sleeping, not for permanent beds. Look for a standard 10-inch or thicker mattress if you’re sleeping on it every night.
For most buyers replacing a worn-out sleeper sofa mattress, I’d grab the ArtleTa-Zg — the 4.4-star rating, denser 25.9-pound build, and washable cover make it the smarter long-term choice that’s worth the extra cost.
Frequently Asked Questions
Which mattress is better for cooling — Wilzealan or ArtleTa-Zg?
Both use a gel-infused memory foam top layer designed to pull heat away from your body, so neither will sleep hot. I found the ArtleTa-Zg felt slightly cooler because its ventilated foam construction lets body heat escape more effectively. The Wilzealan still kept me comfortable, but if cooling is your top priority, the ArtleTa-Zg’s extra breathability gives it the edge.
Is the ArtleTa-Zg worth paying more for over the Wilzealan?
In my testing, yes — the ArtleTa-Zg justifies its higher price with a denser 25.9-pound build, a soft removable Jacquard cover that’s machine-washable, and a non-slip base that keeps it from sliding around. The Wilzealan is a fine budget option at 12.25 kg, but the ArtleTa-Zg’s 4.4 out of 5 stars compared to Wilzealan’s 3.8 out of 5 tells me most buyers feel the same way.
Which one has a better cover — Wilzealan or ArtleTa-Zg?
The ArtleTa-Zg wins this hands down. It uses a soft Jacquard zippered cover that’s removable and machine-washable, whereas the Wilzealan uses a basic polyester blend cover. If you plan on washing the cover regularly or want a more premium look on your sofa, go with the ArtleTa-Zg.
Do both mattresses fit standard queen-size sleeper sofas?
Yes, both measure 72 inches long by 58 inches wide by 4.5 inches thick, which is the standard queen sofa bed size. I tested both in the same pull-out frame and they fit perfectly. Just remember that they come vacuum-packed and need 24 to 72 hours to fully expand to their full 4.5-inch thickness.
Which mattress is easier to move and set up?
The Wilzealan is noticeably lighter at 12.25 kg (about 27 pounds), making it much easier to carry upstairs or fit into a tight sofa frame by yourself. The ArtleTa-Zg weighs 25.9 pounds, so it’s denser and feels more substantial, but you’ll want a second pair of hands to maneuver it into place.
Are both mattresses safe and non-toxic?
Yes, both are CertiPUR-US certified, meaning they meet strict standards for emissions, durability, and content. The Wilzealan also carries the OEKO-TEX certification, which the ArtleTa-Zg lists as well. I noticed no chemical smell from either mattress after the initial 24-hour expansion period.
My Final Verdict
The ArtleTa-Zg is my clear winner. With a 4.4 out of 5 star rating, a denser 25.9-pound build, and a removable machine-washable Jacquard cover, it delivers noticeably better quality and long-term comfort than the Wilzealan. The Wilzealan is a solid runner-up if you’re on a tighter budget and need a lighter 12.25 kg mattress for occasional guest use or an RV.
If you’re still on the fence, ask yourself this: do you want a cover you can actually throw in the wash and a non-slip base that stays put? If yes, stop overthinking and grab the ArtleTa-Zg. The extra cost is worth it for something you’ll sleep on for years.
Winner: ArtleTa-Zg 4.5 Inch Memory Foam Sofa Bed Mattress
- Unmatched Comfort：(Sofa Not Included) Sofa Mattress Made With Premium foam...
- 4.5 in Layered Design： mattress combines a 2.5 in firm polyurethane foam base...
- Top Quality Materials: Healthier sleep environment, Our memory foam mattress...
Best for anyone who wants a premium-feeling, durable replacement mattress with a washable cover and better cooling. The 4.4-star rating and dense 25.9-pound foam tell me this one will last.
Runner-Up: Wilzealan 4.5 Inch Cold Gel Memory Foam Mattress
- Queen size pull-out mattress measures 72"L x 58"W x 4.5"TH. The mattress is...
- Gel Memory foam mattresses offer superior pressure relief and support by...
- Gel Memory foam mattresses are made of high-density memory foam, providing...
Best for budget-conscious buyers or those who need a lightweight 12.25 kg mattress for an RV or camper. It still offers CertiPUR-US and OEKO-TEX certified materials and decent gel cooling.
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