We’re reader supported. If you make a purchase using the links included, we may earn commission at no extra cost to you!

mattress

BedInABox Tranquillium Mattress

Latest Promotions
Spring Sale 25% off mattresses* 25% off bundles. Plus, free pillows with select orders. *Excludes the Essential mattress.
See offer

Essential Mattress Info

Brand
BedInABox
Mattress Type
Memory foam
Prices
Video

Trial & Warranty

Trial Period
Icon check mark
Trial Period (nights)
120
Warranty Length (years)
20

Firmness Options

One Firmness Fits All?
Icon check mark
Adjustable Firmness
Icon times
Half-Half Firmness
Icon times
Selectable Firmness
Icon times
Flippable / Reversible Firmness
Icon times
Firmness Info

A firmer and supportive feel.

Mattress Construction

Materials Overview

A 3-layer construction:

  • 3" 3lb Density CoolRest® Memory Foam Infused with Liquid Gel
  • 2" Pluralux Foam
  • 7" 2lb Density Sure Align Support Foam
  • Smooth Knit Cover.

Comfort Info

3 lb density memory foam rebounds (takes it shape) quicker making it easier to change positions.
The TENCEL® cover is a performance fabric like no other, absorbing moisture completely and naturally, creating a cooler and more comfortable sleep. With more breathability than cotton, and a softer hand than silk, TENCEL® can be found anywhere from athletic wear to luxurious bedding. Nothing is dreamier than going to sleep on a bed made with TENCEL® fibers.

Support Info

Our CoolRest™ gel advanced memory foam quickly conforms to your body for pressure relief and support without letting you sink too far into the mattress.

Comfort Specs

Open cell memory foam increases air flow, contributing to a cooler sleep.
Sure Align foam works in tandem with CoolRest® Gel memory foam and provides perfect support for long lasting comfort.

Support Specs

CoolRest® Gel memory foam perfectly contours to your body providing improved pressure relief to reduce tossing & turning.
Sure Align foam designed to support & correctly align your spine so you can sleep better.

Fabric Specs

The TENCEL® cover offers unique moisture management properties - absorbs 50% more moisture than cotton, making it a highly effective performance fabric. Rapid absorption of moisture proves most effective in inhibiting bacterial growth naturally, without adding any chemicals.

Manufactured in
United States

Suitability

Side Sleepers
Icon check mark
Back Sleepers
Icon check mark

Size & Weight

Twin
Icon check mark
Twin Dimensions
75 x 38 x 12 "
Twin Weight (lb)
53
Twin XL
Icon check mark
Twin XL Dimensions
80 x 38 x 12 "
Twin XL Weight (lb)
62
Full
Icon check mark
Full Dimensions
75 x 54 x 12 "
Full Weight (lb)
76
Queen
Icon check mark
Queen Dimensions
80 x 60 x 12 "
Queen Weight (lb)
90
King
Icon check mark
King Dimensions
80 x 76 x 12 "
King Weight (lb)
113
Cal King
Icon check mark
Cal King Dimensions
84 x 72 x 12 "
Cal King Weight (lb)
113

Certifications & Sustainability

Certifications
CertiPur-US®
CertiPur-US®
Other Certification Info

Delivery

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.

Prices
Latest Promotions
Spring Sale 25% off mattresses* 25% off bundles. Plus, free pillows with select orders. *Excludes the Essential mattress.
See offer