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This hour's deals
BedInABox
BedInABox Tranquillium Mattress
−30%
Home · bedinabox.com

BedInABox Tranquillium Mattress

Deal score 5.3 · Good deal
$804.30$1,149.00 bedinabox.com's regular price

You save $344.70 at bedinabox.com

Deal.ai's agents found this deal on November 11. The store may have changed its price since.

Why it's a great deal

  • Elsewhere right now: Recovery for Athletes $1,091.55
  • bedinabox.com lists its regular price at $1,149.00: 30% off by its own figures
  • Rated 4.7 out of 5 by 270 buyers
Visit bedinabox.com

Every store we checked

  • eBayNew

    In stockSold by give5tocancer

    $699.00Checked 52 min ago
    Visit eBay
  • bedinabox.comNew

    In stock

    $804.30Checked 52 min ago
    Visit bedinabox.com
  • Recovery for AthletesNew

    In stock

    $1,091.55Checked 52 min ago
    Visit Recovery for Athletes
  • Restore FusionNew

    Availability unknown

    $1,729.00Checked 52 min ago
    Visit Restore Fusion

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Price history and every store's price →

Reading bedinabox.com’s product page for the details…

Specs

Size
Twin
Type
Gel Memory Foam

About the BedInABox Tranquillium Mattress

The Tranquillium is BedInABox's gel memory foam mattress, sold compressed in a box and shipped directly. The gel-infused foam is meant to sleep cooler than plain memory foam while still cushioning pressure points, and the cover is a soft knit. It suits back and side sleepers who want a dense, contouring feel without springs. Against rivals like Nectar and Casper, it is a simpler single-foam build with fewer layers and no hybrid option, and owners rate it well for comfort and value.

Best forBack and side sleepersHot sleepers wary of memory foamShoppers who want a simple foam bedGuest rooms and smaller bedrooms
Pros
  • Gel-infused foam limits heat buildup better than standard memory foam
  • Contouring support for shoulders and hips
  • Ships compressed in a box for easy setup
  • Simple all-foam build with no springs to sag
  • Strong owner ratings for comfort
Cons

More deals like this

  • All BedInABox deals and products
  • All bedinabox.com deals and prices
  • All Recovery for Athletes deals and prices
  • Early Black Friday Mattress Deals 2026

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Price facts

  • This deal was $804.30 at bedinabox.com on Nov 11.
  • Lowest price today: $699.00 at eBay (checked Nov 11, 2026).
  • Checked at 4 stores.

Ask our agent about this deal

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Single foam layer gives less bounce than hybrids
  • Edge support is softer than a spring mattress
  • Twin size limits it to one sleeper
  • Foam may feel too firm for some side sleepers at first
  • What reviewers say

    • 4.7 / 5270 ratings

    Owners rate the Tranquillium highly, praising its cushioning and cooler feel compared with older memory foam beds. Complaints center on edge support and a firm break-in period.

    What people mention
    • ComfortPraisedOwners describe a dense, contouring feel that cushions pressure points.
    • TemperaturePraisedThe gel foam is reported to sleep cooler than traditional memory foam.
    • Edge supportCriticisedReviewers say the sides compress when sitting or lying near the edge.
    • Break-inMixedSome owners find it firm at first and say it softens over the first weeks.
    • SetupPraisedBuyers report the boxed mattress expands quickly and is easy to move.

    Questions and answers

    Is the Tranquillium good for side sleepers?
    Yes, the foam contours shoulders and hips. It runs firm at first, so heavier side sleepers may want a softer topper.
    Does it sleep hot?
    The gel-infused foam is designed to pull heat away and owners generally find it cooler than plain memory foam, though it is still an all-foam bed.
    How does it compare with a hybrid mattress?
    It has no coils, so it is quieter and motion-isolating but less bouncy and with softer edges than a hybrid.
    What comes in the box?
    The compressed mattress and a soft knit cover. A foundation or platform bed is needed; it is not adjustable-base compatible in every size.
    How long does it take to expand?
    Most of the expansion happens within a day, with full loft reached over a few days.
    Is the Twin size right for an adult?
    It fits one adult sleeper. Couples or anyone who moves a lot at night should look at Full or Queen.
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