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

comparison

BedInABox Tranquillium vs Helix Dawn Luxe

Easily compare the Helix Dawn Luxe 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.
See offer
Find the Perfect Mattress for How You Sleep
Which mattress is right ?
🎁 March Madness Sale ! 20% Off sitewide + 2 FREE Dream Pillows with Mattress Purchase ($150+ Value) Use Code: MADNESS20
See offer

Essential Mattress Info

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

Trial & Warranty

Trial Period
Icon check markIcon check mark
Trial Period (nights)
120100
Warranty Length (years)
2015

Firmness Options

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

A firmer and supportive feel.

Firm feel top of the bed you need - no sink or give. Comfortable, yet solid under your body. A 8-9 on the firmness scale.

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 Dawn Luxe offers all positions contouring, extra support and a firm feel, it has four layers of construction and is 14 inches high:

  • Cover: Ultra-Cool Premium Pillow Top
  • Comfort Layer: Gel Visco Foam (Density: 2.5 PCF)
  • Support Layer: 2" Helix Dynamic Foam (Higher IFD)
  • Transition Layer: High-Grade Polyfoam (Higher IFD)
  • Zoned Body Shape Layer: 8" 1,000+ Wrapped Coils
  • Base Layer: DuraDense Foam.

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.

The LUXE comes with an Ultra-Cool Cover and a Premium Quilted Pillow Top. This provides advanced comfort and that hotel top layer feel you love, with a smooth touch for next level sleep bliss. LUXE mattresses feature additional comfort layers and are 14" tall (4" taller).

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.

All the support features of the Helix Dawn mattress, combined with Zoned Lumbar Support Coils. Zoning technology to provide a softer feel under your shoulders and firmer under your hips to help cradle your body and align your spine. Featuring best in class edge 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.

Premium quilted top for extra comfort and our Ultra-Cool Cover featuring phase change material to absorb and regulate excess heat.
Top of the line pressure relieving, we use high density Gel Visco for best in class 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.

Helix Dynamic foam designed to react and contour to your body for full body comfort.
High-Grade polyfoam Providing ergonomic support and contour, the transition layer allows for seamless progression of your body weight into the mattress.
Zoned Wrapped Coils give a softer feel under your shoulders and firmer under your hips to help cradle your body, align your spine, and provide advanced lumbar and edge support.

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.

Ultra-Cool Cover
Each LUXE mattress cover features Helix Cool Sleep Technology with phase change material to absorb and release heat to maintain a regulated temperature.

Manufactured in
United StatesUnited States

Suitability

Side Sleepers
Icon check markIcon times
Back Sleepers
Icon check markIcon check mark

Size & Weight

Twin
Icon check markIcon check mark
Twin Dimensions
75 x 38 x 12 "75 x 39 x 13.5 "
Twin Weight (lb)
53
Twin XL
Icon check markIcon check mark
Twin XL Dimensions
80 x 38 x 12 "80 x 39 x 13.5 "
Twin XL Weight (lb)
62
Full
Icon check markIcon check mark
Full Dimensions
75 x 54 x 12 "75 x 54 x 13.5 "
Full Weight (lb)
76
Queen
Icon check markIcon check mark
Queen Dimensions
80 x 60 x 12 "80 x 60 x 13.5 "
Queen Weight (lb)
90
King
Icon check markIcon check mark
King Dimensions
80 x 76 x 12 "80 x 76 x 13.5 "
King Weight (lb)
113
Cal King
Icon check markIcon check mark
Cal King Dimensions
84 x 72 x 12 "84 x 72 x 13.5 "
Cal King Weight (lb)
113

Certifications & Sustainability

Certifications
CertiPur-US®
CertiPur-US®
CertiPur-US®
GREENGUARD Gold
Icon times
GREENGUARD Gold
Other Certification Info

Delivery

Delivery Cost
FREEFree US Shipping
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.

Your Helix Mattress is gently compressed, rolled, and put in a box that's about the size of a bag of golf clubs for easy shipping! We ship via UPS Ground direct from the manufacture to your door.

Prices
Latest Promotions
Spring Sale 25% off mattresses* 25% off bundles. Plus, free pillows with select orders. *Excludes the Essential mattress.
See offer
Find the Perfect Mattress for How You Sleep
Which mattress is right ?
🎁 March Madness Sale ! 20% Off sitewide + 2 FREE Dream Pillows with Mattress Purchase ($150+ Value) Use Code: MADNESS20
See offer