Mainstays 8” Medium Firm Memory Foam Mattress, Full
Mainstays 8” Medium Firm Memory Foam Mattress, Full
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Mainstays

Mainstays 8” Medium Firm Memory Foam Mattress, Full

Mainstays 8” Medium Firm Memory Foam Mattress, FullMainstays 8 Memory Foam Mattress Full Medium Firm for All AgesMainstays 10 Memory Foam Mattress Twin Medium FirmMainstays 10 Memory Foam Mattress Full Medium Firm for All AgesMainstays 8 Memory Foam Mattress Twin Medium Firm for All AgesMainstays 6 Memory Foam Mattress Medium Firm FullMainstays 8 Memory Foam Mattress Medium Firm QueenMainstays 6 Memory Foam Mattress Medium Firm Twin

Key item features

  • Mainstays 8” Medium Firm Memory Foam Mattress, Full
  • 8” PROFILE: Designed to fit seamlessly in guest rooms, teen rooms, dorms, trundle beds, bunk beds, and a variety of other sleeping arrangements
  • ALL SLEEPERS WELCOME: Medium feel ensures side, back, and stomach sleepers alike wake up refreshed and revitalized
  • BREATHABLE COVER: Soft, durable fabric enhances airflow and comfort
  • SPECAILTY INFUSIONS: Green Tea Infused Memory foam and Liquid Gel Flex Foam adapt to your body throughout the night leaving you cool and comfortable
  • MOTION ISOLATION: Enjoy undisturbed sleep with motion isolation that minimizes movement transfer from one side of the mattress to the other
  • COMPATABILITY: Compatible with platform beds, slatted frames, adjustable bases, or a traditional box spring for versatile support
  • MEETS SAFETY STANDARDS: CertiPUR-US® certified foam ensures the mattress is free from harmful chemicals, providing a safe sleep environment for all ages
  • SHIPS IN A BOX: Ships compressed and rolled for easy delivery—just unbox, cut the plastic, and allow 48-72 hours to expand fully
  • Assembled Product Dimensions: 74” L x 53” W x 8” H
  • Package Dimensions: 15.7” L x 15.7” W x 27.6” H; Weighs 38.7 pounds
  • 10 year quality guarantee
To view the product law label, visit: https://prod.globalrsinc.com/LawLabelLookup/Walmart and enter [PA-42138(SC)]
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Customer ratings & reviews

4.3 out of 5 stars
stars4,848 ratings1,068 reviews
How item rating is calculated
  1. 5 stars71% (3,434)
  2. 4 stars11% (535)
  3. 3 stars5% (241)
  4. 2 stars3% (152)
  5. 1 star10% (486)

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 1,068 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?6IHJLHTKI56T3989345810
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?6IHJLHTKI56T3989345810
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?6IHJLHTKI56T3989345810