The Adjustable Base

Set yourself up for rest and relaxation

Our sturdy adjustable base puts you in control of your sleep setup, letting you elevate your head and feet — or both at the same time. It fits seamlessly into most bed frames or can also be used on its own.

Customize your side of the bed?
The king adjustable base is compatible with: 2 twin xl mattresses (if you want to control each side independently) OR 1 king mattress (for uniform control of both sides). For a split king setup, you do not need 2 twin XL adjustable bases.

Select a size

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100 night trial free returns

We're confident you'll love your Casper, so we give you 100 nights to try it on us or we'll give you a full refund. Learn More

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In-Home setup available nationwide

We offer in-home delivery and setup for your Casper mattress and furniture. Learn More

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Customize your sleep setup

Customize your sleep setup with the push of a button. Our adjustable bed frame allows you to easily elevate your upper body to read or watch television, or prop up your legs for added comfort. Paired with any Casper mattress, this durable technology helps you make the most of your time in bed.

Measurements & dimensions

(W x L x D)

Twin XL

37” x 79” x 15”

113 lbs


58.5” x 79” x 15”

156 lbs

Split King

74” x 79” x 15”

226 lbs

Cal King

72” x 83” x 15”

224 lbs

Please note the legs have three different heights: 8”, 11.5”, and 15”

Country of origin

Engineered in Germany, designed in USA, and manufactured in China.


  • Solid wood
  • Steel
  • Foam
  • Fabric upholstery
  • Electronics and Motors

Split setup

With our split king, each sleeper can customize the setup without disrupting a partner. To use this functionality, purchase two twin XL Casper mattresses.


Works with the Casper mattress and can fit inside most standard bed frames without slats.

The adjustable base cannot be used with spring mattresses or box springs. The frame can be put directly on the floor.

Split kings are compatible with two twin XL mattresses or one king mattress.


Setup Guide

Some assembly is required. Please note: the queen, king and Cal king sizes will ship in two separate boxes.

Shipping info

In the US, we ship via UPS ground from our distribution centers in CA, IL, and NJ. In Canada, we ship ground from Cambridge, Ontario.

Shipping costs

Free shipping and free returns in the US and Canada.


20-year limited warranty. Read More

Comfort, Simplified

100 night trial

Sleep on it, lounge on it, dream on it — if you don’t love it, we’ll give you a full refund.

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100 Nights

100 Nights, Free Returns

Frequently asked questions

See all base FAQs