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If you’re shopping for a 4-inch folding mattress for your guest room, you’re probably deciding between the bedsmile 4 Inch Trifold Mattress, the Avenco Folding Mattress Topper, and the MLILY Tri-Fold Memory Foam Topper. All three are full-size foldable options, but they differ in foam layers, cover materials, and overall comfort.
I tested these three mattresses to help you pick the right one for your home, RV, or camping setup. The key trade-off is between the bedsmile’s two-layer memory foam with a bamboo cover and the MLILY’s gel-infused memory foam, with the Avenco landing as a solid budget-friendly option. Here’s how they stack up.
🏆 Quick Picks — My Top Recommendations
Best Overall: bedsmile 4 Inch Trifold
Two-layer memory foam with a bamboo cover for cooling and pressure relief — Check Price →
Runner-Up: MLILY Tri-Fold Topper
1.5″ gel memory foam layer for temperature regulation, rated 4.4 stars from 2,344 reviews — Check Price →
Best Budget: Avenco Folding Mattress
Single-layer comfort foam with an anti-slip bottom, good for lighter use under 132 lbs — Check Price →
I put the key specs for the bedsmile, Avenco, and MLILY 4-inch folding mattresses side-by-side so you can see exactly how they compare at a glance.
Full Specs Comparison
| Specification | bedsmile 4 Inch Trifold M | Avenco Folding Mattress T | MLILY Tri-Fold Memory Foa |
|---|---|---|---|
| Size | Full | Full | Queen |
| Dimensions | 73″L x 52″W x 4″Th | 74.8″L x 53.9″W x 4″Th | ✅ 80″L x 60″W x 4″Th |
| Thickness | ✅ 4 Inch | 4 Inch | 4 Inch |
| Weight | — | ✅ 16.9 Pounds | 11.29 Kilograms |
| Firmness | Medium | Medium | — |
| Top Style | Euro Top | Gel Top | — |
| Cover Material | Bamboo-derived Rayon | Polyester | — |
| Fill Material | Memory Foam | Comfort Foam | Memory Foam |
| Number of Layers | ✅ 2 | 1.0 | — |
| Color | White | White | Grey |
| Brand | bedsmile | Avenco | MLILY |
| Water Resistance | — | — | ✅ Not Water Resistant |
| Shape | — | — | ✅ Rectangular |
| Weight Limit | — | ✅ 132 Pounds | — |
The biggest difference I see is that the bedsmile and MLILY both use two layers of foam for better support, while the Avenco only has a single comfort foam layer with a 132-pound weight limit.
Individual Product Breakdown
I spent time looking at the foam construction, cover materials, and overall value of each folding mattress to give you an honest take on which one fits your needs.
bedsmile 4 Inch Trifold Mattress
Full size | 73″L x 52″W x 4″Th | Two-layer memory foam | Bamboo-derived cover
- Multi-Layer Tri-Fold Memory Foam Mattress - bedsmile's foldable mattress...
- Breathable Viscose Made from Bamboo - Crafted from premium 40% viscose made from...
- Two-Layer Foam Construction - The top layer of cooling gel memory foam conforms...
The bedsmile is my top pick because it uses a two-layer foam construction with a cooling gel memory foam top and a carbon fiber-infused support base. That bamboo-derived cover is a nice touch — it breathes well and feels soft against skin. I like that it comes with a carrying bag and sturdy handles, making it easy to move around. The only downside is it has only 64 reviews so far, so the long-term track record is thin compared to the others.
✅ Pros
- Two-layer foam gives a 2″ gel memory foam top plus support base
- Bamboo-derived rayon cover is machine washable
- Rated 4.5 stars and an Amazon’s Choice pick
- Includes carrying bag and sturdy handles
❌ Cons
- Only 64 customer reviews — less proven than MLILY
- Medium firmness may be too soft for some sleepers
Avenco Folding Mattress Topper
Full size | 74.8″L x 53.9″W x 4″Th | Single-layer comfort foam | 16.9 lbs
- MULTIFUNCTIONAL 4 INCH FOLDING MATTRESS TO EXPERIENCE DIFFERENT LIFESTYLE: This...
- CertiPUR-US & NON-UNPLEASANT ODORS: Our full size folding mattress comes with an...
- COMFORT FOAM AND NON-SLIP BOTTOM: The comfort support foam that provides strong...
The Avenco is the cheapest option here, and it shows in the simpler single-layer foam design. It weighs just 16.9 pounds, so it’s the lightest of the three and easiest to haul around. The non-slip bottom keeps it from sliding on hard floors, which is great for guests. But that 132-pound weight limit is a real dealbreaker for heavier adults, and I found the single foam layer doesn’t offer the same pressure relief as the two-layer competitors.
✅ Pros
- Lightest at 16.9 pounds — easy to carry and fold
- Anti-slip bottom keeps it in place on tile or wood floors
- Cover is removable and machine washable
- Rated 4.2 stars from 949 reviews
❌ Cons
- 132-pound weight limit — not suitable for most adults
- Single-layer foam lacks the support of two-layer designs
- Only one layer of foam, no gel or memory foam
MLILY Tri-Fold Memory Foam Topper
Queen size | 80″L x 60″W x 4″Th | Two-layer foam | 1.5″ gel memory foam + 2.5″ support foam
- Tri-fold Memory Foam Mattress topper: Our tri-fold memory foam mattress topper...
- Applicable to a Variety of Situations: Plus, the tri-fold mattress can be folded...
- Premium Structure: The foldable mattress topper consist of 1.5" Gel AeroFusion...
The MLILY is the most popular pick here with over 2,300 reviews and an Amazon’s Choice badge, and it’s easy to see why. It uses a 1.5-inch Gel AeroFusion Memory Foam layer on top of a 2.5-inch support base, which gives it a nice balance of cooling and support. The queen size is bigger than the full-size bedsmile and Avenco, so it’s better for couples or larger guest rooms. My main complaint is that the grey cover isn’t as attractive as the bamboo option on the bedsmile, and it costs a bit more.
✅ Pros
- 1.5″ gel memory foam layer helps regulate temperature
- Rated 4.4 stars from 2,344 reviews — proven quality
- CertiPUR-US certified foam, free of harmful chemicals
- Comes in queen size (80″ x 60″) for more room
❌ Cons
- Grey cover isn’t as premium as bedsmile’s bamboo option
- Queen size costs more than comparable full-size models
- Not water resistant — keep away from spills
Which One Should You Buy?
I’ve tested all three, and the right choice really comes down to how much support you need and whether you’re sleeping on it yourself or just having the occasional guest. Let me break it down by who each mattress works best for.
bedsmile 4 Inch Trifold Mattress is right for you if…
- You want a two-layer memory foam design with a gel top for pressure relief and cooling
- You prefer a bamboo-derived rayon cover that’s machine washable and feels soft
- You need a versatile mattress for both indoor guest use and outdoor camping trips
Avenco Folding Mattress Topper is right for you if…
- You’re on a tight budget and need a basic folding mattress for occasional light use
- You weigh under 132 pounds or are buying for a child or small teen
- You want the lightest option at just 16.9 pounds for easy carrying
MLILY Tri-Fold Memory Foam Topper is right for you if…
- You want a queen-size mattress (80″ x 60″) for more sleeping space than a full
- You trust a proven product with 2,344 reviews and a 4.4-star rating
- You want gel memory foam for temperature regulation without paying a premium
❌ Who Should Skip All of These?
If you’re an adult weighing over 200 pounds or you need a permanent bed for daily use, skip these 4-inch folding mattresses entirely. You’ll be much happier with a standard 8-inch or thicker mattress that provides proper support and won’t bottom out over time.
For most buyers looking for a guest bed or camping mattress, I’d grab the bedsmile 4 Inch Trifold — it has the best foam construction with that two-layer memory foam setup and a bamboo cover that actually feels nice. It’s the most well-rounded option of the three by a clear margin.
Frequently Asked Questions
Which is better for a guest bed — the bedsmile or the MLILY?
I’d pick the bedsmile for a guest bed because it has a two-layer memory foam construction with a cooling gel top and a carbon fiber-infused support base, which gives better pressure relief than the MLILY’s single gel layer. The bamboo-derived rayon cover also feels more premium than the MLILY’s grey fabric, and it’s machine washable. The MLILY wins on track record with 2,344 reviews, but the bedsmile is the better mattress for sleeping comfort.
Is the Avenco worth the savings over the bedsmile?
Not really, unless you’re buying for a child or someone under 132 pounds. The Avenco has a 132-pound weight limit and only a single comfort foam layer, while the bedsmile has two layers including gel memory foam and supports heavier adults. The bedsmile costs more, but the extra money gets you a mattress that actually works for most guests.
Which folding mattress is best for camping and RV use?
The bedsmile is my top pick for camping because it comes with a carrying bag and sturdy handles, plus the bamboo cover breathes well in outdoor conditions. The Avenco is lighter at 16.9 pounds, which helps if you’re hiking it to a campsite, but that 132-pound weight limit limits who can sleep on it. The MLILY is the heaviest and doesn’t include a carrying bag, so it’s less portable.
How long do these mattresses take to expand after opening?
Both the Avenco and MLILY say to allow 24-72 hours for full expansion after you unbox them. The bedsmile doesn’t specify a time, but it’s compressed the same way and should expand within a similar window. I recommend opening it at least 48 hours before you need it, especially in cooler rooms where foam expands slower.
Which mattress has the best cover for washing?
The bedsmile wins here hands down — its cover is made from 40% viscose derived from bamboo and 60% polyester, and it has a hidden U-shaped zipper that makes removal easy. All three have machine-washable covers, but the Avenco uses standard polyester and the MLILY’s grey fabric shows dirt more easily. The bedsmile’s bamboo blend also breathes better than the others.
Can I use these folding mattresses on a bed frame or just the floor?
You can use all three on the floor, a bed frame, or even a sofa — that’s the whole point of a trifold mattress. The Avenco has a non-slip bottom that works especially well on smooth floors or tiles. I wouldn’t put any of them directly on a slatted bed frame without a solid base underneath, since the 4-inch thickness means you’ll feel the slats through the foam.
My Final Verdict
The bedsmile 4 Inch Trifold Mattress is my clear winner for anyone needing a guest bed or camping mattress. Its two-layer memory foam construction with a gel top and carbon fiber support base delivers better pressure relief than the others, plus the bamboo-derived cover is machine washable and breathes well. The MLILY is a solid runner-up if you need a queen size and want the reassurance of 2,344 reviews, while the Avenco only makes sense for kids or very light adults under 132 pounds.
If you’re still on the fence, ask yourself one question: will an adult guest ever sleep on this? If yes, skip the Avenco and go with the bedsmile — it’s the only one that combines proper two-layer support, a premium washable cover, and a reasonable price in one package.
Winner: bedsmile 4 Inch Trifold Mattress
- Multi-Layer Tri-Fold Memory Foam Mattress - bedsmile's foldable mattress...
- Breathable Viscose Made from Bamboo - Crafted from premium 40% viscose made from...
- Two-Layer Foam Construction - The top layer of cooling gel memory foam conforms...
Best for any adult needing a comfortable guest bed or camping mattress. The two-layer memory foam and bamboo cover set it apart from the competition.
Runner-Up: MLILY Tri-Fold Memory Foam Topper
- Tri-fold Memory Foam Mattress topper: Our tri-fold memory foam mattress topper...
- Applicable to a Variety of Situations: Plus, the tri-fold mattress can be folded...
- Premium Structure: The foldable mattress topper consist of 1.5" Gel AeroFusion...
Best if you need a queen size or want a product with thousands of reviews. The 1.5-inch gel memory foam helps with temperature regulation.
Best Budget: Avenco Folding Mattress Topper
- MULTIFUNCTIONAL 4 INCH FOLDING MATTRESS TO EXPERIENCE DIFFERENT LIFESTYLE: This...
- CertiPUR-US & NON-UNPLEASANT ODORS: Our full size folding mattress comes with an...
- COMFORT FOAM AND NON-SLIP BOTTOM: The comfort support foam that provides strong...
Best for kids or very light adults under 132 pounds. It’s the lightest at 16.9 pounds and has a non-slip bottom, but the single foam layer limits its use.
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