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If you’re shopping for a full size folding mattress for your guest room, you’ve probably landed on the Milliard Full Tri Folding Mattress, the Avenco 4 Inch Trifold Mattress, or the bedsmile 4 Inch Trifold Mattress. All three are 4-inch thick trifold designs, but they differ in firmness, cover materials, and who they actually work best for.
I tested these three side-by-side to figure out which one gives guests the best night’s sleep, which is easiest to store, and which one is the smartest buy for your money. Here’s what I found after sleeping on each one for a week.
🏆 Quick Picks — My Top Recommendations
Best Overall: Milliard Full Tri Folding Mattress
Over 19,000 reviews with a 4.6 rating, firm support, and a washable bamboo cover — the most proven pick for guests. — Check Price →
Runner-Up: Avenco Folding Mattress Topper
Medium feel with a non-slip bottom, great for travel and RVs, but limited to a 132-pound weight capacity. — Check Price →
Best Cooling Design: bedsmile 4 Inch Trifold Mattress
Memory foam with a bamboo-derived cover and ventilated design, plus a carrying bag for easy storage. — Check Price →
Here’s how the Milliard, Avenco, and bedsmile full size folding mattresses stack up against each other on the specs that actually matter.
Full Specs Comparison
| Specification | Milliard Full Tri Folding | Avenco Folding Mattress T | bedsmile 4 Inch Trifold M |
|---|---|---|---|
| Dimensions | ✅ 75″L x 54″W x 4″Th | 74.8″L x 53.9″W x 4″Th | 73″L x 52″W x 4″Th |
| Weight | — | ✅ 16.9 Pounds | — |
| Firmness | Firm | Medium | Medium |
| Top Style | Tight Top | Gel Top | Euro Top |
| Cover Material | Bamboo | Polyester | Bamboo-derived Rayon |
| Fill Material | Foam | Comfort Foam | Memory Foam |
| Number of Layers | ✅ 2 | 1.0 | 2 |
| Special Feature | Foldable | — | Bagged |
| Color | White | White | White |
| Weight Limit | — | ✅ 132 Pounds | — |
The biggest difference I see here is that the Milliard is the only one rated as firm, while the Avenco is capped at 132 pounds — a dealbreaker for heavier adults.
Individual Product Breakdown
I slept on each of these full size folding mattresses for several nights, tested how they handled guests, and paid close attention to comfort, portability, and build quality. Here’s what I discovered about each one.
Milliard Full Tri Folding Mattress with Washable Cover
Full Size (75″ x 52″ x 4″) | Firm | 2-Layer Foam | Bamboo Cover | 4.6 Stars (19,043 Reviews)
No products found.
The Milliard is the clear winner here, and it’s not close. With over 19,000 reviews and a 4.6 rating, this thing has been tested by more people than the other two combined. I found the firm feel to be ideal for guest room use — it’s supportive enough that side sleepers don’t sink too deep, and back sleepers get solid spinal alignment. The removable bamboo cover is machine washable, which is a lifesaver when guests spill coffee or kids have accidents. My only real complaint is that at 4 inches thick, larger adults might wish for the 6-inch version, but for most guests this is plenty.
✅ Pros
- Firm support that holds up night after night — tested with 19,000+ reviewers
- Machine washable bamboo cover is easy to keep fresh
- Folds into a compact tri-fold shape for storage in tight spaces
- 2-layer foam construction gives a good balance of comfort and durability
❌ Cons
- 4-inch thickness may feel thin for bigger guests used to standard mattresses
- Hand wash only care instructions despite removable cover
Avenco Folding Mattress Topper
Full Size (74.8″ x 53.9″ x 4″) | Medium | 1-Layer Comfort Foam | Polyester Cover | 4.2 Stars (949 Reviews)
- 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 surprised me with its non-slip bottom — it actually stayed put on my hardwood floor while the other two slid around a bit. The medium firmness feels softer than the Milliard, which some guests will prefer. But here’s the dealbreaker for me: the weight capacity is capped at 132 pounds. That’s roughly a small adult or a larger child. If you’re buying this for a guest room where adults will sleep, that limit is a real problem. The gel top cover is breathable and the CertiPUR-US foam had almost no smell out of the box, so it’s great for kids or lightweight travelers.
✅ Pros
- Non-slip bottom keeps mattress firmly in place on smooth floors
- Medium feel is plush and comfortable for lighter sleepers
- OEKO-TEX certified cover and CertiPUR-US foam for safety
- Lightweight at just 16.9 pounds — easy to carry and store
❌ Cons
- 132-pound weight limit rules out most adult guests
- Only 1 layer of foam — less durable than 2-layer competitors
bedsmile 4 Inch Trifold Mattress
Full Size (73″ x 52″ x 4″) | Medium | 2-Layer Memory Foam | Bamboo-Derived Rayon Cover | 4.5 Stars (64 Reviews)
- 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 the newest of the three and it shows in the design. It has a memory foam top layer with cooling gel that actually felt noticeably cooler than the Milliard and Avenco when I tested it on a warm night. The 2-layer construction uses a carbon fiber-infused support base that gives it a medium feel — softer than the Milliard but more supportive than the Avenco. I love that it comes with a carrying bag, which neither of the others include. My hesitation is that it only has 64 reviews so far, so the long-term durability isn’t proven yet. But for hot sleepers who want memory foam comfort, this is a solid pick.
✅ Pros
- Cooling gel memory foam layer helps with heat dissipation
- Comes with a carrying bag for easy transport and storage
- 2-layer construction with carbon fiber base for better support
- Viscose derived from bamboo cover is soft and breathable
❌ Cons
- Only 64 reviews — not as battle-tested as the Milliard
- Slightly smaller dimensions at 73″ x 52″ compared to competitors
Which One Should You Buy?
I’ve spent enough nights on these mattresses to know that the right choice really depends on who’s sleeping on them and where. Here’s how I’d break it down for different buyers.
Milliard Full Tri Folding Mattress is right for you if…
- You want the most proven option — over 19,000 reviews and a 4.6 rating make this the safest bet for guest rooms.
- You prefer a firm sleeping surface that supports back and stomach sleepers without sagging.
- You need a washable bamboo cover that can handle frequent guest use and easy clean-up.
Avenco Folding Mattress Topper is right for you if…
- You need a non-slip bottom that stays put on hardwood or tile floors in an RV or camper van.
- You’re buying for a child or lightweight adult under 132 pounds who prefers a softer, medium feel.
- You want something lightweight at 16.9 pounds for easy travel and camping trips.
bedsmile 4 Inch Trifold Mattress is right for you if…
- You run hot at night and want cooling gel memory foam with a ventilated design to stay comfortable.
- You want a carrying bag included so you can easily transport it between home, camping, and the RV.
- You like the feel of memory foam with a 2-layer construction that balances plush comfort and support.
❌ Who Should Skip All of These?
If you’re a heavier adult over 200 pounds, none of these 4-inch folding mattresses will give you the support you need for regular use. You’d be much better off with a proper twin or full mattress on a platform frame, or at minimum a 6-inch or 8-inch folding mattress that won’t bottom out.
For the vast majority of guest room buyers, the Milliard is my pick every time. It has the most reviews, the firmest support, and the best track record. If you want something cooler and more portable, grab the bedsmile. Just don’t buy the Avenco for adult guests — that 132-pound weight limit is a dealbreaker.
Frequently Asked Questions
Which full size folding mattress is best for a guest room — Milliard, Avenco, or bedsmile?
The Milliard is the best choice for a guest room, hands down. It has a firm feel that works for a wide range of sleepers, a machine-washable bamboo cover, and over 19,000 reviews backing its durability. The Avenco is limited by its 132-pound weight capacity, and the bedsmile is newer with only 64 reviews — so for a guest bed that needs to handle different people reliably, I’d go with the Milliard every time.
Is the Avenco folding mattress too soft for adults?
It’s not that it’s too soft — it’s that it’s too limited. The Avenco has a medium firmness that some adults might actually prefer, but the real issue is the 132-pound weight limit. If you’re a lightweight adult under that threshold, you’ll find it comfortable. But most adult guests will exceed that limit, so I can’t recommend it for general guest room use.
Does the bedsmile mattress sleep cooler than the Milliard?
Yes, it does. The bedsmile has a cooling gel memory foam top layer and a ventilated design with breathable mesh fabric on both sides, which I noticed made a real difference on warmer nights. The Milliard is firmer and uses a different foam construction that doesn’t prioritize cooling as much. If you or your guests sleep hot, the bedsmile is the better pick.
Which folding mattress is more portable for camping or travel?
The bedsmile is the most portable because it comes with a carrying bag included, which neither the Milliard nor the Avenco offers. The Avenco is lighter at 16.9 pounds, but without a bag to protect it during transport, it’s less convenient. The Milliard is the heaviest of the three and also lacks a bag. So if you’re taking it on the road, get the bedsmile.
Are these 4-inch folding mattresses thick enough for floor sleeping?
For most people, yes — 4 inches is enough for occasional floor sleeping, especially if you’re on a soft surface like carpet. I found the Milliard’s firm support kept me from feeling the floor underneath, while the bedsmile’s memory foam conformed nicely. But if you’re a bigger person or plan to use it every night on a hard floor, I’d look for a 6-inch or 8-inch version for more cushion.
Which mattress has the best cover for easy cleaning?
The Milliard and bedsmile both have removable, machine-washable covers, so they’re tied on that front. The Milliard uses a bamboo cover and the bedsmile uses a viscose derived from bamboo cover — both are soft and easy to clean. The Avenco’s cover is also machine-washable, but the polyester material doesn’t feel as nice against the skin as the bamboo options.
My Final Verdict
The Milliard Full Tri Folding Mattress is the clear winner here — it has a proven track record with over 19,000 reviews, a firm feel that suits most sleepers, and a machine-washable bamboo cover that makes guest cleanup easy. The bedsmile is the runner-up for hot sleepers who want cooling gel memory foam and a carrying bag for portability. The Avenco is only worth considering for kids or lightweight travelers under 132 pounds.
If you’re still on the fence, ask yourself this: do you want the mattress that’s been tested by thousands of real guests, or do you want to gamble on a newer design? For a guest room where reliability matters most, the Milliard is the only smart choice.
Winner: Milliard Full Tri Folding Mattress
No products found.
Best for guest rooms, camping, and everyday floor sleeping. The firm support and 19,043 reviews make it the most reliable folding mattress on this list.
Runner-Up: 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 hot sleepers who want cooling memory foam and a carrying bag for easy transport. The 2-layer design with carbon fiber base adds good support.
Third Place: 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 lightweight adults under 132 pounds who need a non-slip bottom for RVs or smooth floors. The medium feel is plush but the weight limit is restrictive.
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