Mainstays 6 in Medium Firm Memory Foam Mattress, Twin
100+ bought since yesterdayOverall pick
Mainstays

Mainstays 6 in Medium Firm Memory Foam Mattress, Twin

5,549 ratings
Mainstays 6 in Medium Firm Memory Foam Mattress, TwinMainstays 6 Memory Foam Mattress Medium Firm TwinMainstays 8 Memory Foam Mattress Twin Medium Firm for All Ages
Bed SizeTwin
Mattress Thickness6 in

Key item features

  • Compact Twin Profile: Twin size (75" L x 38" W x 6" H) provides a lower-profile, space-saving design suitable for various bedroom setups.
  • Soft Breathable Cover: A soft, breathable fabric cover adds comfort and creates an inviting sleep surface.
  • Layered Comfort Foams: Features green tea-infused memory foam for contouring, breathable Liquid Gel Flex Foam for airflow, and a durable base foam for steady support.
  • Balanced Firm Feel: Offers a balanced medium firm feel, providing a supportive sleep surface.
  • Certified Motion Isolation: Includes motion isolation to reduce movement transfer and CertiPUR-US certified foam for added purchase confidence.
  • Broad Base Compatibility: Compatible with platform beds, slatted frames, adjustable bases, and traditional box springs for versatile use.
  • Convenient Boxed Delivery: Ships compressed and rolled in a box for simple setup, requiring 48 to 72 hours for full expansion.
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Customer ratings & reviews

4.3 out of 5 stars
stars
5,549 ratings1,172 reviews
How item rating is calculated
  1. 5 stars71% (3,959)
  2. 4 stars11% (611)
  3. 3 stars5% (269)
  4. 2 stars3% (170)
  5. 1 star10% (540)

Reviews summary

Pros

  • : Provides comfortable sleep surface at reasonable cost.
  • : Provides a balanced firmness and softness sleeping experience.
  • : Setup process is typically completed in a short amount of time.
  • : Provides cushioning to alleviate back pain.
  • : Supports back well with a comfortable feel.

Neutral

  • : Can be too soft for some, but also provides excellent support for others.
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Showing 1-3 of 1,172 reviews

Oct 22, 2024
Reviewer name: Reyna
Item details
Bed size: Queen
Mattress thickness: 8 in
5 out of 5 stars
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?6IHJLHTKI56T3533748366
Jul 3, 2025
Reviewer name: DontTreadonMe503
Item details
Bed size: Twin
Mattress thickness: 8 in
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

We bought two of these in twin size for our daughters' bedrooms and were very impressed. They were just as high quality as any other online bed in a box purchase we'd made previously. They were well packaged and quite comfortable. For the price, they can't be beat.

Helpful?6IHJLHTKI56T3533748366
Oct 24, 2025
Reviewer name: Diana
Item details
Bed size: Full
Mattress thickness: 6 in
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great value

Bought this mattress for my growing teen son. The medium firmness is perfect for him. This is a great value for the memory foam mattress. It comes compressed in a box and just let it fluff up for 48 to 72 hours. Would recommend for a guest or teen/kid room or your futon!

Helpful?6IHJLHTKI56T3533748366
Current price is $74.88
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  • Free 90-day returns
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