BedInABox Tranquillium Mattress

From $699.00 Regular Price $899.00
The Tranquillium by BedInABox is an incredibly supportive gel memory foam mattress with 3 layers and a soft-knit, Tencel cover.

Haiku Designs is proud to offer the original BedInABox! The fabulous Tranquillium Mattress by BedInABox provides a firm and supportive, good night's rest. The Tranquillium Mattress provides luxurious comfort with a 3" comfort layer made of 3lb gel memory foam and 7" of SureAlign 2lb density support foam. Additionally, the Tranquillium features a 2" PluraLux transition layer between the comfort and support foams to seamlessly blend the firmness of the support layer and the softness of the comfort layer. CoolRest technology and a soft knit, Tencel cover with moisture management properties help maintain a cool sleeping surface to keep you from over-heating.

BedInABox mattresses are proudly made in the USA under strict regulations to guarantee you a high-quality product. All BedInABox foams are CertiPur-US certified meaning they do not contain any harmful chemicals such as formaldehyde, mercury, lead, ozone depleters, PBDEs, or other toxic flame retardants. Rest easy and in exquisite comfort on your new BedInABox Tranquillium Mattress!


  • Firm and supportive feel
  • CertiPur-US Certified foams
  • 3" CoolRest comfort layer made of 3lb gel memory foam
  • 2" transition PluraLux foam layer
  • 7" of SureAlign 2lb density support foam
  • Soft knit Tencel cover with gray border
  • Available in Twin, Twin XL, Full, Queen, King, and Cal King
  • Designed for pressure relief and support
  • No weight limit on mattress
  • Made in the USA


Twin- 75"L x 38"W x 12"H

Twin XL- 80"L x 38"W x 12"H

Full- 75"L x 54"W x 12"H

Queen- 80"L x 60"W x 12"H

King- 80"L x 76"W x 12"H

California King- 84"L x 72"W x 12"H

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