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If you’ve got a lumpy pull-out couch that’s ruining your guests’ sleep, both the SUNYRISY and the LILYPELLE 4-inch Full sofa bed replacement mattresses promise a fix. These two memory foam options are nearly identical in size at 72 by 53 inches, and they both carry 4.3 out of 5 stars on Amazon.
I’m writing this for anyone who needs a new mattress for their sleeper sofa and wants to know which one actually delivers better comfort and value. The real trade-off here is brand reputation versus a lower price — and I’ve dug through the specs to help you decide.
🏆 Quick Picks — My Top Recommendations
Best Overall: SUNYRISY Foldable Sofa Mattress
Amazon’s Choice pick with 86 customer reviews and a machine-washable zipper cover — Check Price →
Runner-Up: LILYPELLE Sofa Mattress Replacement
12% savings at checkout and high-density 350D foam that resists sagging — Check Price →
Let me break down the specs side-by-side so you can see exactly where these two 4-inch Full mattresses differ.
Full Specs Comparison
| Specification | SUNYRISY Foldable Sofa Be | LILYPELLE Sofa Bed Mattre |
|---|---|---|
| Dimensions | ✅ 72.05×53.15×3.94 in | 72x53x4 in |
| Size | Full | Full |
| Color | White | White |
| Material | Memory Foam | ✅ Memory Foam, 350D Foam |
| Item Depth | ✅ 4 inches | 4 inches |
| Product Type | Sofa Bed Mattress | Sofa Bed Mattress |
| Age Range | — | ✅ Adult |
| Foam Type | Memory Foam | ✅ High-density 350D Foam |
| Thickness | ✅ 4 in | 4 in |
| Width | ✅ 53.15 in | 53 in |
| Length | ✅ 72.05 in | 72 in |
| Height | 3.94 in | ✅ 4 in |
The biggest difference I see is that the LILYPELLE uses high-density 350D foam to resist sagging, while the SUNYRISY has 86 customer reviews compared to just 24 for the LILYPELLE — that’s a lot more real-world feedback to go on.
Individual Product Breakdown
I looked at the build quality, comfort claims, cover materials, and real-world feedback from buyers to see how these two stack up for your guest room or RV.
SUNYRISY Foldable Sofa Bed Replacement Mattress Memory Foam 4 inch Pull Out Sofa Couch Bed Trifold Mattress Full Size for Convertible Sleeper
4 inch | Full 72″x53″ | Memory Foam | Amazon’s Choice | 86 Reviews
- Only Mattress: Only the sofa bed mattress replacement for sofa bed, sofa NOT...
- Tips: Our sofa mattress is rolled up and compressed in a box for delivery. There...
- Ultimate Comfort: This pull-out sofa mattress provides unparalleled comfort and...
The SUNYRISY is the safer bet here, and Amazon’s Choice badge backs that up. It’s a trifold memory foam mattress that expands in 12 to 24 hours after you unbox it, and the cover is made from breathable 350D air layer fabric that you can unzip and machine wash. I like that it’s compatible with most pull-out sofa frames, but keep in mind it’s only the mattress — your sofa frame is not included. The biggest downside is the 72-hour expansion window for the LILYPELLE is actually faster on the SUNYRISY at just 12-24 hours, so you’ll be sleeping on it sooner.
✅ Pros
- Amazon’s Choice product with 86 customer reviews — the most feedback of the two
- Machine-washable zipper cover made from breathable 350D air layer fabric
- Expands to full thickness in just 12-24 hours, faster than the competition
- Memory foam aligns neck and spine for better sleep support
❌ Cons
- May have wrinkles and deformation when first opened; needs time to recover
- Slightly more expensive than the LILYPELLE competitor
LILYPELLE Sofa Bed Mattress Replacement 4 Inch – Foam Sofa Beds Mattress for Sleeper Sofas and Hide a Bed Couches
4 inch | Full 72″x53″ | High-Density 350D Foam | 12% Savings | 24 Reviews
- Premium Comfort & Support:Expertly crafted with a 4-inch support base, this sofa...
- Versatile for Any Space:The sofa bed mattress adapts seamlessly to sleeper...
- Built for Lasting Quality:Crafted with high-density 350D foam, this sleeper sofa...
The LILYPELLE is the budget-friendly option that still delivers pressure-relieving foam comfort. It uses high-density 350D foam in a 4-inch support base that’s designed to resist sagging year after year, and it comes vacuum-packed so it’s easy to haul into a guest room or RV. I appreciate that it’s suitable for sleeper sofas, campers, boats, and even floor use, but you need to allow 24 to 72 hours for it to fully expand — longer than the SUNYRISY. It only has 24 reviews compared to 86, so there’s less real-world data to go on, but the price is right if you’re on a tight budget.
✅ Pros
- High-density 350D foam resists sagging and maintains resilience over time
- Works on sleeper sofas, RVs, campers, boats, futons, and even the floor
- Lightweight and vacuum-packed for easy transport and setup
- 12% savings on the sticker price compared to typical retail
Which One Should You Buy?
Both of these 4-inch Full mattresses get the job done, but your choice really comes down to whether you want a proven option with more reviews or a lower price tag. Here’s who each one suits best.
SUNYRISY Foldable Sofa Bed Replacement Mattress is right for you if…
- You want peace of mind from an Amazon’s Choice product backed by 86 customer reviews
- You need a mattress that fully expands in 12 to 24 hours — not 3 days
- You value a machine-washable zipper cover made from breathable 350D air layer fabric
LILYPELLE Sofa Bed Mattress Replacement is right for you if…
- You’re on a tighter budget and want the 12% savings over typical retail price
- Durability matters most — the high-density 350D foam resists sagging night after night
- You need a mattress that works in multiple places: sleeper sofas, RVs, campers, boats, or the floor
❌ Who Should Skip All of These?
If you need a mattress thicker than 4 inches for a heavier person or a primary bed, these won’t cut it — look for a 6 or 8-inch option instead. Also, if you’re replacing a mattress for a queen or king-size sleeper sofa, these Full-size options at 72 by 53 inches won’t fit.
For the most common buyer — someone refreshing a guest room pull-out couch — I’d go with the SUNYRISY. The faster expansion time, washable cover, and nearly 4 times more customer reviews make it the smarter, safer pick for just a small difference in price.
Frequently Asked Questions
Which is better for a guest room, the SUNYRISY or LILYPELLE?
I’d pick the SUNYRISY for a guest room without hesitation. It’s an Amazon’s Choice product with 86 customer reviews compared to just 24 for the LILYPELLE, so you have way more real-world feedback to trust. The cover is also machine washable with a zipper, which is huge for guests who might spill something, and it expands to full thickness in just 12 to 24 hours instead of waiting up to 3 days.
Is the LILYPELLE worth the lower price over the SUNYRISY?
The LILYPELLE is competitively priced and does offer real value if you’re on a strict budget. It uses high-density 350D foam that resists sagging, which is a smart long-term feature. That said, the price difference is small, and the SUNYRISY gives you a faster expansion time and a much more proven track record, so I think the extra is worth it for most people.
Which mattress expands faster after opening the box?
The SUNYRISY wins this one hands down. It takes 12 to 24 hours to fully recover to its 4-inch thickness, while the LILYPELLE needs 24 to 72 hours. If you have guests arriving soon and need the mattress ready quickly, the SUNYRISY is the clear choice.
Do both mattresses work on an RV or camper bed?
Yes, both of them work for RVs and campers. The LILYPELLE actually lists RVs, campers, and boats as compatible uses right in the description, and the SUNYRISY also says it works for camping and RV mats. Just make sure your RV bed frame measures 72 inches long by 53 inches wide — that’s the Full size both of these come in.
Which one has a better cover for cleaning?
The SUNYRISY has the edge here. It uses a breathable 350D air layer fabric cover that is detachable with a zipper and can be machine washed and drum dried. The LILYPELLE also has a removable zipper cover that’s washable, but it doesn’t specify the fabric density or drying instructions, so I can’t confirm it’s as durable.
Will a 4-inch mattress be thick enough for a pull-out sofa?
For most guest room use, yes, 4 inches is perfectly fine. Both of these use memory foam or high-density foam that conforms to your body and aligns your spine, which makes up for the thinner profile. If you’re a bigger person or plan to sleep on it every night, you might want a thicker mattress, but for occasional use, 4 inches works great.
My Final Verdict
The SUNYRISY is my clear overall winner. It’s an Amazon’s Choice product with 86 reviews compared to just 24 for the LILYPELLE, it expands in 12 to 24 hours instead of up to 72, and it has a machine-washable breathable cover. The LILYPELLE is a solid runner-up for budget-conscious buyers who want high-density 350D foam that resists sagging, but the SUNYRISY gives you more confidence for a small difference in price.
If you’re still on the fence, ask yourself this: do you want a proven mattress with nearly 4 times more customer feedback, or are you willing to save a few dollars and wait up to 3 days for it to expand? For me, the SUNYRISY is the easy choice every time.
Winner: SUNYRISY Foldable Sofa Bed Replacement Mattress
- Only Mattress: Only the sofa bed mattress replacement for sofa bed, sofa NOT...
- Tips: Our sofa mattress is rolled up and compressed in a box for delivery. There...
- Ultimate Comfort: This pull-out sofa mattress provides unparalleled comfort and...
Perfect for anyone replacing a pull-out couch mattress who wants a proven, Amazon’s Choice pick with fast 12-24 hour expansion and a washable zipper cover.
Runner-Up: LILYPELLE Sofa Bed Mattress Replacement
- Premium Comfort & Support:Expertly crafted with a 4-inch support base, this sofa...
- Versatile for Any Space:The sofa bed mattress adapts seamlessly to sleeper...
- Built for Lasting Quality:Crafted with high-density 350D foam, this sleeper sofa...
Best for budget shoppers who need a versatile mattress for RVs, campers, or boats and want high-density foam that won’t sag as quickly.
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