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Sleepy's
Sleepy's by Sealy 8 Inch Firm Memory Foam Twin Mattress in a Box

Sleepy's by Sealy 8 Inch Firm Memory Foam Twin Mattress in a Box

4.2(1,000 ratings)

Best price now

$599.99at Mattress FirmChecked 1 h ago

Compared across 2 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $599.99 at Mattress Firm (checked Nov 12, 2026).
  • Checked at 2 stores.

Sleepy's by Sealy 8 Inch Firm Memory Foam Twin Mattress in a Box prices at every store

  • Mattress FirmNew

    In stock

    $599.99Free shippingChecked 1 h ago
    Visit Mattress Firm
  • Mattress FirmNew

    In stock

    $1,089.99Free shippingChecked 1 h ago
    Visit Mattress Firm

Store links may earn us a commission. Some prices via Klarna.

Sleepy's by Sealy 8 Inch Firm Memory Foam Twin Mattress in a Box price history

$599.99$299.99
Oct 31Nov 12

Lowest price we've seen: $299.99 on Oct 31 at Mattress Firm; highest $599.99 on Nov 12. Tracked across 2 stores since Oct 31.

What reviewers say

  • 4.2 / 51,000 ratings

From Mattress Firm

  • Firm gel memory foam comfort with pressure relief and motion isolation
  • Cradling gel memory foam contours to your body
  • Excellent motion isolation reduces partner disturbance
  • Firm support for aches and pains
  • Easy unbox and setup mattress-in-a-box design
  • Ideal for back and stomach sleepers
Sizes
Twin, Twin XL, Full, Queen, King
Materials
Quilting layer: stretch knit cover; comfort layer: 2" memory foam; support system: 6" support foam
Fit
Firm feel; 8 inch mattress height
Sizing
New mattresses may feel firmer than the showroom model; allow 30-60 days for the mattress and body to adjust. Add a second Twin XL mattress in cart to build a S
Care
Rotate mattress end-to-end at 2 weeks, then every 2-3 months; use a waterproof mattress protector to avoid stains; carton the mattress and transport on its side
Guarantee
10 Year Limited warranty
Returns
120 Night Sleep Trial: if you don't love it, they'll help you find a new one or your money back
Shipping
Free shipping; delivery to your front door, side door or garage; contactless delivery; no removal of your old mattress set
Packs
Add a second Twin XL mattress in cart to build a Split King set
In the box
Mattress in a box, Included instructions for unboxing and expansion

About the Sleepy's by Sealy 8 Inch Firm Memory Foam Twin Mattress in a Box

Firm gel memory foam comfort with pressure relief and motion isolation in a box.

What buyers say

Buyers like
  • Exceptional comfort and improved sleep quality
  • Restful nights and waking refreshed
  • Firm support appeals to side and back sleepers
  • Excellent value for the price
  • Good for couples due to motion isolation
  • Great match with help from Sleep Experts
Buyers complain about
  • Too firm for some sleepers
  • One reviewer did not receive the mattresses and could not reach customer support

Specifications

Size
Twin
Type
Gel Memory Foam
Firmness
FIRM COMFORT
Sleeper Type
Back and Stomach

Questions and answers

Where is the Sleepy's by Sealy 8 Inch Firm Memory Foam Twin Mattress in a Box cheapest?
At Mattress Firm, for $599.99, as of our latest check.
Is the Sleepy's by Sealy 8 Inch Firm Memory Foam Twin Mattress in a Box at its lowest price?
The lowest price we've seen is $299.99 at Mattress Firm on October 31, against $599.99 now.
What do buyers say about the Sleepy's by Sealy 8 Inch Firm Memory Foam Twin Mattress in a Box?
Rated 4.2 out of 5 from 1,000 ratings. Buyers like: Exceptional comfort and improved sleep quality; Restful nights and waking refreshed; Firm support appeals to side and back sleepers. Common complaints: Too firm for some sleepers; One reviewer did not receive the mattresses and could not reach customer support.

Stores we've priced the Sleepy's by Sealy 8 Inch Firm Memory Foam Twin Mattress in a Box at

  • Mattress Firm deals and prices

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