Mainstays

Mainstays 10” Medium Firm Memory Foam Mattress, Queen

4.3 stars out of 4807 reviews
(4.3)|
4,807 ratings
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Key item features

  • Versatile Design: 10" profile fits primary rooms, guest rooms, and teen rooms seamlessly.
  • Universal Comfort: Medium firmness suitable for side, back, and stomach sleepers.
  • Enhanced Breathability: Soft, durable cover promotes airflow and comfort.
  • Specialty Infusions: Green Tea Infused Memory Foam and Liquid Gel Flex Foam keep you cool and comfortable.
  • Motion Isolation: Minimizes movement transfer for undisturbed sleep.
  • Wide Compatibility: Works with platform beds, slatted frames, adjustable bases, or traditional box springs.
  • Safety Certified: CertiPUR-US certified foam ensures a safe sleep environment.
  • Convenient Shipping: Ships compressed and rolled in a box, expands fully within 48-72 hours.
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Customer ratings & reviews

4.3 out of 5 stars
stars4,807 ratings1,067 reviews
How item rating is calculated
  1. 5 stars71% (3,408)
  2. 4 stars11% (529)
  3. 3 stars5% (238)
  4. 2 stars3% (149)
  5. 1 star10% (483)

Reviews summary

Pros

  • : Offers comfortable sleep surface at reasonable cost.
  • : Provides a gentle sleeping surface.
  • : Provides a comfortable surface with right firmness.

Neutral

  • : Can be too soft for some, but also provides excellent support for others.
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Showing 1-3 of 1,067 reviews

Feb 3, 2026
WalmartCustomer
Item details
Bed size: Twin
Mattress thickness: 8 in
5 out of 5 stars review

Verified Purchase

This mattress exceeded my expectations for the price. It arrived well packaged and expanded quickly after opening. The 8-inch thickness provides good support while still being comfortable, especially for sleeping on my back and side. The medium-firm feel is balanced, not too hard and not too soft. It offers great value for money and feels durable and well-made. I've been sleeping much better since using it and would definitely recommend it to anyone looking for an affordable and comfortable mattress.

Incentivized Review
Helpful?6IHJLHTKI56T3025154365
Oct 22, 2024
Reyna
Item details
Bed size: Queen
Mattress thickness: 8 in
5 out of 5 stars review

Verified Purchase

Love it !

So I waited a copy of days to post my opinion! Me and hubby were having trouble getting rest ..so I decided to buy this item …let me tell you it is very comfortable. It expanded amazingly well maybe even bigger.. I follow all instructions—- no smell ..All comfortable I got a queen size price was good. Thank you

Helpful?6IHJLHTKI56T3025154365
Apr 19, 2025
WalmartCustomer
Item details
Bed size: King
Mattress thickness: 10 in
5 out of 5 stars review

Verified Purchase

After letting the mattress sit for about 36 hours, we tried it out for one night. I have terrible back pain from my work but this mattress was like sleeping on clouds. Very comfortable

Incentivized Review
Helpful?6IHJLHTKI56T3025154365