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BedInABox Tranquillium vs Diamond Transformation Hybrid

Easily compare the Diamond Transformation Hybrid vs BedInABox Tranquillium Mattresses side-by-side.

Latest Promotions
Spring Sale 25% off mattresses* 25% off bundles. Plus, free pillows with select orders. *Excludes the Essential mattress.
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Limited time only. 35% Off select Diamond mattresses + Free bedding bundle up to $285 value
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Essential Mattress Info

Brand
BedInABoxDiamond Mattress
Mattress Type
Memory foamHybrid (coils and foam)
Prices
Video

Trial & Warranty

Trial Period
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Trial Period (nights)
120120
Warranty Length (years)
2020

Firmness Options

One Firmness Fits All?
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Adjustable Firmness
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Half-Half Firmness
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Selectable Firmness
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Flippable / Reversible Firmness
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Firmness Info

A firmer and supportive feel.

Everyone has their ideal comfort level. That's why we've designed this comfort selector tool so that you know exactly what you're jumping into. Select from 3 firmness levels:

  • Soft, a 3/10 on the firmness scale, a light, gentle and flexible feel that conforms to your body.
  • Medium, a 5/10 on the firmness scale, the best of both worlds for an exceptionally comfy feel.
  • Firm, an 8/10 on the firmness scale, solid and stable support throughout your sleeping surface.

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.

The Transformation Mattress by Diamond Mattress is constructed of:

  • 2" CoolTouch Advanced Regulating Fabric
  • 2" Diamond Hyper Conductive Sparkle Foam
  • Mirco Coil Comfort Layer
  • 2" HD Comfort Layers
  • Patented Zoned Support System - Foam Encased.

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.

Foam Encased Comfort Edge: Increases usable sleep surface by allowing you to sleep all the way to the edge without feeling like falling off. Creates a better edge for entering, exiting and sitting on the side of the mattress.

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.

Combination Foam and Coils: Superior Pressure Relief. Contours to your natural shape to help achieve a comfortable sleeping posture. Hyper conductive foam regulates core temperatures for a natural sleep. Coils provide breathability and additional comfort and support.

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.

Diamond Sparkle Foam actively regulates your core temperature for the most natural sleeping environment. Graphene and conductive flakes dissipate heat from the surface of the skin.
Wrapped coil design enhances airflow and breathability to keep you sleep environment more comfortable.

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.

Patented Zoned Support System: Adding 25% more support where you need it most

  1. Additional Wrapped coils in the center 3rd provided extra back support where you need it.
  2. Improves alignment by relieving pressure along the shoulders, back and hips
  3. Prevents motion transferred between partners for less disturbance
Diamond Sparkle Foam provides superior pressure relief for sound sleep.
Over 1,000 micro-coil act with independent suspension to create weightless pressure relief.

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.

Diamond Sparkle Foam actively regulates your core temperature for the most natural sleeping environment. Graphene and conductive flakes dissipate heat from the surface of the skin.
Wrapped coil design enhances airflow and breathability to keep you sleep environment more comfortable.

Manufactured in
United StatesUnited States

Suitability

Side Sleepers
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Back Sleepers
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Size & Weight

Twin
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Twin Dimensions
75 x 38 x 12 "75 x 39 x 14 "
Twin Weight (lb)
5363
Twin XL
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Twin XL Dimensions
80 x 38 x 12 "80 x 39 x 14 "
Twin XL Weight (lb)
6271
Full
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Full Dimensions
75 x 54 x 12 "75 x 54 x 14 "
Full Weight (lb)
7686
Queen
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Queen Dimensions
80 x 60 x 12 "80 x 60 x 14 "
Queen Weight (lb)
90101
King
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King Dimensions
80 x 76 x 12 "80 x 76 x 14 "
King Weight (lb)
113135
Cal King
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Cal King Dimensions
84 x 72 x 12 "84 x 72 x 14 "
Cal King Weight (lb)
113135

Certifications & Sustainability

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

Delivery

Delivery Cost
FREEFREE
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.

Our premium mattresses are quickly delivered directly to your door, so you can unbox and unwind as fast as you can say Bed-in-a-Box.

Prices
Latest Promotions
Spring Sale 25% off mattresses* 25% off bundles. Plus, free pillows with select orders. *Excludes the Essential mattress.
See offer
Limited time only. 35% Off select Diamond mattresses + Free bedding bundle up to $285 value
See offer