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WellFlex Memory Foam Mattress
The WellFlex Memory Foam Mattress is designed for sleepers who want cooling comfort, pressure relief and dependable support. Its BioBreeze™ Memory Foam contours to the body while promoting breathability, creating a comfortable sleep surface that feels cushioned without trapping excess heat.
A cooling knit fabric cover made with organic and recycled materials helps improve airflow and supports MLILY’s commitment to incorporating more sustainable materials into its mattresses.
The International Chiropractors Association endorsed MLILY’s mattresses and pillows in 2022 following evaluation by its review board.
For sleepers searching for a cooling memory foam mattress, a supportive mattress for pressure relief or a mattress made with more sustainable materials, WellFlex delivers breathable comfort for a more restorative night’s sleep.
Get to Know the Structure of Your Mattress
Product Specs
Mattress Size & Dimensions
| Mattress Size | Dimensions | Best For |
|---|---|---|
| Twin | 38" x 75" | Single sleepers, kids rooms |
| Twin XL | 38" x 80" | Tall single sleepers, dorms |
| Full | 54" x 75" | Single sleepers, guest rooms |
| Queen | 60" x 80" | Couples, master bedrooms |
| King | 76" x 80" | Couples who want extra space |
| California King | 72" x 84" | Tall couples, spacious rooms |
Crafted by Sleep Experts. Perfected for You.
innovation and comfort to meet your body where it rests best.
Sustainability Meets Comfort
Feel good not only about your sleep but also your impact on the planet. The WellFlex is crafted with organic recycled materials and eco-friendly components, proving that luxurious comfort and sustainability can go hand in hand. It’s not just a mattress—it’s a smarter choice for you and the environment.
Wake Up Refreshed, Not Overheated
Stuffy nights are a thing of the past with the WellFlex. Its Comfort Knit Cover and innovative foam layers work together to promote airflow, reduce heat buildup, and keep you comfortably cool all night long. Wake up feeling refreshed and ready to take on the day with energy to spare!
Sleep Your Way, Every Night
Designed to support spinal alignment and promote healthier sleep, the WellFlex gives you the freedom to choose between two firmness options—so you can find the perfect level of comfort tailored to your sleep style. Whether you prefer a sturdy surface or a plush embrace, the WellFlex has you covered.
Stay Fresh, Sleep Better
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Try it in store
before you buy
Nothing beats trying it for yourself. Find an authorized MLILY retailer near you and feel the difference in person.
- Lie on every comfort level side by side
- Talk to a trained sleep specialist
- Same MLILY warranty, wherever you buy
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Is this mattress right for you?
WellFlex is an all-foam mattress with BioBreeze™ Memory Foam for contouring pressure relief and dependable support.
- Best for
- Sleepers who want classic memory foam contouring and couples who want minimal motion transfer
- Sleep positions
- 3.0 Plusher: side sleepers. 1.0 Firmer: back and stomach
- Height
- 12-inch
- Construction
- All-foam: BioBreeze™ Memory Foam over Flex Support Base Foam
- Motion isolation
- Best in the MLILY lineup
- Cooling
- Breathable BioBreeze™ foam and cooling knit cover
- Hot sleeper?
- For maximum cooling, see WellFlex ICE
Frequently asked questions
Who is WellFlex best for?
Sleepers who like the hug of memory foam, and couples who don't want to feel a partner moving. As an all-foam mattress it has the best motion isolation in the MLILY lineup.
Who might prefer a different MLILY mattress?
If you want the bounce and edge support of coils, choose a hybrid such as Midnight or ChiroPro. If you sleep hot, WellFlex ICE adds phase change material.
Is WellFlex good for side sleepers?
Yes. The 3.0 Plusher lets the shoulders and hips sink in for pressure relief while the base foam keeps the spine supported.
Does WellFlex transfer motion?
Very little. All-foam construction absorbs movement, so it's a strong choice if you share a bed with a restless sleeper.
Is WellFlex a good mattress for hot sleepers?
WellFlex includes breathable BioBreeze Memory Foam to improve airflow. For additional cooling, the ICE upgrade adds extra cooling foams and ActiveTemp phase change material to help regulate temperature.
What makes WellFlex a sustainable mattress?
The WellFlex cover features fabric made from recycled thread materials, helping reduce environmental impact while maintaining durability and comfort.
What is the difference between the standard WellFlex and WellFlex ICE?
The standard WellFlex provides supportive memory foam comfort, while the ICE version includes an additional 2 inches of cooling foams, a cooling cover, and ActiveTemp phase change material for enhanced temperature regulation.
Does it work with an adjustable base?
Yes. It's designed to flex with an adjustable base, and MLILY recommends a platform bed or an MLILY adjustable base for the best performance.
Is there a weight limit?
MLILY mattresses support about 700 lbs total. For the longest life, use a solid platform foundation or an MLILY adjustable base.
Is there a sleep trial?
MLILY doesn't offer an in-home sleep trial. Items bought on mlilyusa.com can be returned within 30 days if they're unused and unopened in the original packaging. The best way to test the feel first is to lie on it at an MLILY retailer near you.
What warranty does it come with?
Every MLILY mattress is backed by the MLILY 10-Year Warranty, which covers defects in materials and workmanship. You get the same warranty whether you buy online or from an authorized retailer. See warranty details.