BedInABox Serenity Mattress Mattress

Mattress Comparison

Mattress Type Memory foam
(Click to buy direct)
BedInABox | Full
BedInABox | Queen
BedInABox | King
BedInABox | Cal King
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Trial & Warranty

Trial Period
Trial Period (nights) 120
Warranty Length (years) 20

Firmness Options

One Firmness Fits All?
Adjustable Firmness
Flippable / Reversible Firmness
Half-Half Firmness
Selectable Firmness
Firmness Info The Serenity is soft, but not so soft that you sink in and it's hard to get out. You will have support from the support foam and softness from the memory foam and pillow top.

Mattress Construction

Materials Overview Our newly redesigned Serenity is our top-of-the-line, ultra-luxury memory foam mattress at an affordable price. A 5-layer construction:
  • 2" Quilted Top Cover with Phase-Changing CoolRest® Adaptive Material
  • 1" Soft CoolRest® Gel Memory Foam
  • 2" AirRest™ Adaptive Foam
  • 4" 1.8lb Density High Quality Soy-Based Transitional Foam
  • 4" 2.2lb Density Sure Align Support Foam.
Comfort Info
Support Info
Comfort Specs We use a functional finish in the Serenity to add cooling properties by infusing "smart" thermocules into the cover. This phase-changing technology regulates body temperature by pulling heat away from your body. Not only does it keep a warm sleeper comfortable, but these "smart" thermocules also add warmth back to those who sleep a little cooler.
Support Specs Super-soft, gel-infused quilting foam that cradles and contours for extra pressure relief.
Soft CoolRest® gel memory foam contours and relieves pressure by forming a cradle that is shaped to your body profile, no matter what position you sleep in.
AirRest™ Adaptive foam uses trapped air to cradle, relieve pressure and provide support. Works in progression with the top layer of memory foam to help support the most recessed areas of the body (such as the lumbar).
High-density Sure Align support foam works in tandem with transitional foam to support body weight and align the spine.
Fabric Specs Adaptive, plush, quilted cover. CoolRest® Adaptive material uses phase-changing material made with microscopic capsules embedded in the cover to effectively balance temperature between the sleeper and the mattress. This phase-changing material absorbs, stores and releases heat for optimal thermal comfort. CoolRest® Adaptive is based on technology originally developed for use in astronaut space suits.
Manufactured in United States


Side Sleepers
Back Sleepers

Size & Weight

Twin Dimensions
Twin Weight (lb)
Twin XL
Twin XL Dimensions
Twin XL Weight (lb)
Full (Double)
Full Dimensions 54" x 75" x 14"
Full Weight (lb) 83
Queen Dimensions 60" x 80" x 14"
Queen Weight (lb) 101
King Dimensions 76" x 80" x 14"
King Weight (lb) 127
California King
California King Dimensions 72" x 84" x 14"
California King Weight (lb) 127


Delivery Cost FREE
Delivery Info

Typically, orders are shipped within two business days of receipt from our warehouse in Johnson City, TN via FedEx Ground. Delivery is usually 1-5 days depending on where you live.

Current Promotions
BedInABox | Full
BedInABox | Queen
BedInABox | King
BedInABox | Cal King
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