Yawnder mattress reviews · Updated October 2026
MLILY WellFlex is a memory-foam mattress for shoppers who prefer contouring over the bounce of coils. The original Yawnder article described it as a firmer option; MLILY now lists both Firmer 1.0 and Plusher 3.0 versions, so the exact version matters.
WellFlex at a glance
| Feature | What to know |
|---|---|
| Type | All-foam mattress |
| Current options | Firmer 1.0 and Plusher 3.0 |
| Potential strengths | Foam contouring and reduced motion transfer |
| Trade-offs | Less bounce than a hybrid; firm 1.0 may feel hard to some side sleepers |
Our showroom experience
Firsthand showroom experience: I am Ben Trapskin, Yawnder's founder, and I have personally tried the MLILY WellFlex ICE 1.0 in our showroom. I am 6 feet 3 inches tall and weigh 220 pounds. That is the body-size context for my comfort impressions; your sleeping position and preferences also matter. The ICE is a separate model, so this experience should not be treated as a direct test of the standard WellFlex 1.0 or 3.0. How we test mattresses.
WellFlex 1.0 vs. 3.0 vs. ICE
The standard WellFlex 1.0 is the firmer choice in MLILY’s current listing. The 3.0 is the plusher standard WellFlex and has a different layer stack. WellFlex ICE is a separate cooling-focused line, not simply another name for either standard version. Compare the precise label, firmness and construction before using an older review to guide a purchase.
Construction
MLILY currently lists the standard 1.0 with a knit cover, one inch of BioBreeze memory foam, two inches of Performance Memory Foam and a nine-inch foam support base. The 3.0 uses a different stack: MLILY lists 1.5 inches each of Gel AeroFusion and BioBreeze memory foam, two inches of Liquid Gel CoolFlex foam, 1.5 inches of Flex Comfort foam and a 5.5-inch foam base. These are manufacturer specifications, not measurements of our older review sample. Verify the current product listing before purchase.
Who should consider it?
Back and stomach sleepers: If you prefer a firmer mattress with less sink, the 1.0 is worth trying. Comfort and support vary with body size, and a mattress that feels firm to one person may feel different to another.
Side sleepers: Compare the 3.0 if you want more cushioning around the shoulder and hip. The firm 1.0 may create pressure for some people, particularly lighter sleepers.
Combination sleepers: Memory foam can feel more enveloping than latex or coils. If you change positions frequently, try the mattress in person and assess whether you can move comfortably.
Compare the tradeoffs with our hybrid mattress guide, and contact the Yawnder showroom to check which models are available to try.
Motion isolation, edges and cooling
The original article highlighted the line’s foam construction and motion isolation. All-foam beds generally absorb more movement than bouncy innersprings, which can be useful to couples, although performance depends on the specific model and sleepers. Edge support can feel softer than a reinforced hybrid, especially when sitting near the edge.
MLILY describes breathable and cooling-oriented materials. That does not guarantee a cool night: room temperature, bedding and how deeply you sink into the foam can all influence comfort. If temperature is a priority, compare the standard WellFlex with the separate ICE models and check the retailer’s return terms.
Before you buy
Check the model name, size, firmness, availability, delivery and return policy at the seller you choose. Pricing and retailer policies can change, and a store purchase may have different terms from a direct order. If possible, try your preferred sleeping positions for several minutes and compare both firmness options.
View current WellFlex models →
Frequently asked questions
Is the WellFlex a hybrid?
The standard WellFlex models are described by MLILY as memory-foam mattresses with foam support cores, rather than coil hybrids.
Is every WellFlex firm?
No. MLILY currently lists a Firmer 1.0 and a Plusher 3.0; the feel and layer stack differ.
Is WellFlex ICE the same mattress?
No. ICE is a separate line. Confirm the full model name and version when comparing specifications and reviews.
Editorial disclosure: Some links on Yawnder may be affiliate links. Product specifications and policies can change.
Compare this mattress against 142 tested mattresses
Sort all 142 mattresses we have tested by pressure relief, support, cooling, motion isolation, edge support, price, trial and warranty, then filter by how you actually sleep. Of those, 84 hold a complete standardized record and 41 a partial standardized record.