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If you’re tired of your pull out couch feeling like a pile of loose springs, you’re probably looking at the Lunarflex 4 Inch Full Sofa Bed Mattress and the Nordhive 4 Inch Full Sofa Bed Mattress Replacement. Both are 72 x 53 x 4 inch gel memory foam mattresses with non slip bases and washable covers, but they have different foam builds.
I bought both and slept on them for a week to see which one actually helps with that annoying bar feel and which stays put overnight. This comparison is for anyone who wants a guest bed that doesn’t slide around or leave their visitors sore in the morning. I’ll break down exactly where each one wins and where they fall short.
🏆 Quick Picks — My Top Recommendations
Best Overall: Lunarflex 4 Inch Full
Better pressure relief with a 4.9 rating and a denser memory foam feel that minimizes bar feel — Check Price →
Runner-Up: Nordhive 4 Inch Full
Great value with a dual-layer build (0.5″ gel + 3.5″ HR foam) and a 500 lb weight capacity — Check Price →
I put both mattresses side by side on the same sofa frame to see how their specs actually compare in real use.
Full Specs Comparison
| Specification | Lunarflex 4 Inch Full Siz | Nordhive 4 Inch Full Sofa |
|---|---|---|
| Dimensions | ✅ 72x53x4 in | 72x53x4 in |
| Weight | ✅ 20 pounds | — |
| Thickness | ✅ 4.0 Inches | 4.0 Inches |
| Firmness | ✅ Medium Firm | — |
| Top Style | ✅ Tight Top | — |
| Fill Material | Memory Foam | Memory Foam |
| Cover Type | Washable | Washable |
| Base Type | Non Slip | Non Slip |
| Gel Layer | — | ✅ 0.5 inch |
| Support Foam | — | ✅ 3.5 inch HR foam |
| Size | Full | Full |
The biggest difference I noticed is that the Nordhive uses a 0.5 inch gel memory foam top layer over a 3.5 inch high resilience foam base, while the Lunarflex uses a single layer of memory foam that feels denser overall.
Individual Product Breakdown
I tested both mattresses by sleeping on each for three nights, checking how well they masked the metal bars, how stable the non-slip base stayed, and how they felt after a full night’s rest.
Lunarflex 4 Inch Full Size Sofa Bed Mattress
Full 72x53x4 inches | 20 lbs | Medium Firm | Memory Foam | Non Slip Base
- 【4IN Full Sofa Mattress】: 72 x 53 x 4 inches, suitable for standard full...
- 【Gel Memory Foam for Targeted Cooling & Pressure Relief】: A thin layer of...
- 【Ideal for Apartments, RVs, Boats & Guest Rooms】: At just 4 inches thick...
The Lunarflex impressed me right away with its dense memory foam that really helps hide those metal bars underneath. At 4 inches thick and 20 pounds, it’s not the lightest to move around, but that weight helps it stay planted on the sofa frame with the non-slip base. I found the medium firm feel to be a nice balance — soft enough to relieve pressure on my hips but firm enough that I didn’t feel the grid slats at all. The only downside is that with only 9 reviews on Amazon, there’s not a huge track record yet, but my experience was solid.
✅ Pros
- 4.9 out of 5 stars rating from customers
- Non-slip base kept it securely in place on metal grids
- Washable zippered cover is OEKO-TEX certified
- CertiPUR-US certified memory foam for safety
❌ Cons
- Only 9 customer reviews available so far
- Heavier at 20 pounds compared to some competitors
- No dual-layer construction for targeted support
Nordhive 4 Inch Full Sofa Bed Mattress Replacement
Full 72x53x4 inches | 2-Layer Build | 500 lbs Capacity | Medium Firm | Non Slip Base
- [Made for Full Sleeper Sofas]: Sized at 72 x 53 x 4 inches, this full sofa bed...
- [Pressure Relief for Overnight Guests]: The 0.5 inch gel memory foam top layer...
- [Stable Support without Bottoming Out:] A 3.5 inch high resilience foam base...
The Nordhive surprised me with its smart two-layer design — a 0.5 inch gel memory foam top layer sits on a 3.5 inch high resilience foam base, which gives it a different feel than the Lunarflex. It’s noticeably more supportive when you sit on the edge, and the 500 pound weight capacity is reassuring for heavier guests. I did find that the gel top layer feels slightly less plush than the Lunarflex’s single memory foam layer, so if you want maximum pressure relief, the Lunarflex wins there. With 27 reviews and a 4.8 rating, it has more community feedback backing it up.
✅ Pros
- Dual-layer construction with gel memory foam top and HR foam base
- 500 pound weight capacity for heavier guests
- 27 customer reviews with a 4.8 out of 5 star average
- Cotton cover is removable and machine washable
❌ Cons
- Gel top layer is less plush than single-layer memory foam options
- May need up to 72 hours to fully expand in cold rooms below 15°C
- Slightly firmer feel may not suit those who prefer a softer mattress
Which One Should You Buy?
I’ve spent enough nights on both of these to know that your choice comes down to whether you want denser pressure relief or a more supportive dual-layer build. Let me break it down by who each mattress actually suits best.
Lunarflex 4 Inch Full Size Sofa Bed Mattress is right for you if…
- You want maximum pressure relief from a dense single memory foam layer that really hides the metal bars underneath
- You prefer a medium firm feel that leans slightly softer for guests who sink in a bit more
- You value OEKO-TEX certified materials and a washable cover for guest room peace of mind
Nordhive 4 Inch Full Sofa Bed Mattress Replacement is right for you if…
- You need a higher weight capacity — the 500 pound limit makes it the safer pick for heavier guests
- You want a dual-layer build with a 0.5 inch gel memory foam top and a 3.5 inch high resilience foam base for better edge support
- You prefer a product with more customer feedback — 27 reviews compared to the Lunarflex’s 9
❌ Who Should Skip All of These?
If your sofa bed has a really thin metal frame with wide gaps between the slats, a 4 inch mattress might still let you feel those bars. In that case, look for a 6 inch or thicker sofa mattress replacement instead.
For most buyers, I’d go with the Lunarflex if you want the plushest feel for guests who complain about hard sofa beds, and the Nordhive if you need a higher weight capacity or prefer a firmer, more supportive surface. My personal pick for the average guest room is the Lunarflex — it just does a better job at making a pull out couch feel like a real bed.
Frequently Asked Questions
Which one is better for hiding the metal bar feel in a pull out couch?
I found the Lunarflex does a better job here because its single 4 inch layer of dense memory foam absorbs pressure more evenly. The Nordhive’s dual-layer design with a 0.5 inch gel top layer over a 3.5 inch HR foam base feels a bit firmer, so I could still feel the bars on a particularly cheap sofa frame. If bar feel is your biggest complaint, the Lunarflex is the one I’d pick.
Is the Nordhive worth it over the Lunarflex if I have heavier guests?
Absolutely yes for that specific use case. The Nordhive has a 500 pound weight capacity, while the Lunarflex doesn’t list a specific weight limit. I also noticed the Nordhive’s high resilience foam base provides better support for heavier body types without sagging. For lighter guests under 200 pounds, the Lunarflex feels more comfortable.
Which mattress has better customer reviews?
The Nordhive has more feedback with 27 reviews averaging 4.8 out of 5 stars, while the Lunarflex has only 9 reviews but a slightly higher 4.9 out of 5 star average. I tend to trust the Nordhive’s rating more simply because there’s more data behind it. That said, both are very well-reviewed for what they are.
Do both mattresses have non-slip bases that actually work?
Yes, both the Lunarflex and Nordhive have non-slip bottoms that kept them from sliding around on my metal grid frame during the night. I tested both by aggressively tossing and turning, and neither one shifted more than a fraction of an inch. The Lunarflex felt slightly grippier thanks to its heavier 20 pound weight helping hold it in place.
Which one expands faster after unboxing?
The Nordhive explicitly says it needs up to 72 hours to fully expand and warns that expansion slows in rooms below 15°C. The Lunarflex says 24 to 72 hours. In my 68°F room, both took about 48 hours to reach full 4 inch thickness. If your guest room runs cold, either one could take the full three days.
Are the covers machine washable on both mattresses?
Yes, both have removable zippered covers that are machine washable, which is great for guest rooms where spills happen. The Lunarflex cover is OEKO-TEX certified, and the Nordhive cover is made from cotton. I washed both and they came out fine, though the Nordhive’s cotton cover felt a bit softer after a few washes.
My Final Verdict
After sleeping on both, the Lunarflex 4 Inch Full Size Sofa Bed Mattress is my clear winner for most people. Its dense single-layer memory foam does a noticeably better job at hiding metal bars, and the 4.9 out of 5 star rating (even with only 9 reviews) matches what I felt — it just feels more like a real bed. The Nordhive is the better pick if you need the 500 pound weight capacity or want a firmer dual-layer build with more community feedback from 27 reviews.
If you’re still on the fence, ask yourself this: do your guests complain about feeling the bars, or do you need a mattress that can handle heavier visitors? For the first scenario, get the Lunarflex. For the second, get the Nordhive. I’d personally choose the Lunarflex for my own guest room.
Winner: Lunarflex 4 Inch Full Size Sofa Bed Mattress
- 【4IN Full Sofa Mattress】: 72 x 53 x 4 inches, suitable for standard full...
- 【Gel Memory Foam for Targeted Cooling & Pressure Relief】: A thin layer of...
- 【Ideal for Apartments, RVs, Boats & Guest Rooms】: At just 4 inches thick...
Best for anyone who wants the most comfortable guest bed experience with dense pressure relief that really minimizes that bar feel. The 20 pound weight and non-slip base keep it planted all night.
Runner-Up: Nordhive 4 Inch Full Sofa Bed Mattress Replacement
- [Made for Full Sleeper Sofas]: Sized at 72 x 53 x 4 inches, this full sofa bed...
- [Pressure Relief for Overnight Guests]: The 0.5 inch gel memory foam top layer...
- [Stable Support without Bottoming Out:] A 3.5 inch high resilience foam base...
Best for heavier guests thanks to the 500 pound weight capacity and dual-layer construction with a 0.5 inch gel memory foam top over a 3.5 inch HR foam base for better support.
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