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GIF of Casper's Foundation being put together from its pieces

Close-up image of the corner of the Foundation

Side view of a made bed. The mattress is on a Foundation on top of a metal bed frame

Casper

Foundation

BEST SELLER

$299

The bedrock of great sleep.

We reinvented the box spring. Our bed foundation provides excellent support under any Casper mattress and can be assembled in minutes.

Need replacement Casper Foundation pins? Shop Foundation Pin

Why you'll love it

STRONG AND STURDY: Engineered with solid wood, the foundation has been rigorously tested for durability and proven to stand up to years of sleep.

EFFORTLESS ASSEMBLY: It can be easily assembled and disassembled in a matter of minutes — and you don’t need to use any tools.

SUPPORTIVE SLATS: Perfectly spaced slats positioned a perfect four inches apart for optimal support.

Select your size:

Twin Twin XL Full Queen King California King

In-stock, ships in 1-2 business days | Free shipping & returns

Got Questions

Chat with us now, or give us a call: +1.888.498.0003

Our friendly Sleep Specialists are dedicated to helping you find the mattress of your dreams!

Foundation

$299

Select your size:

$299

Product specifications

Measurements & dimensions

Twin

74" x 37.5" x 7.5"

Twin XL

79" x 37.5" x 7.5"

Full

74" x 52.5" x 7.5"

Queen

79" x 59.5" x 7.5"

King

79" x 75.5" x 7.5"

California King

71.5" x 83" x 7.5"

Materials & certifications

Solid and/or Engineered Wood Frame and Slats Woven Exterior Upholstery Non-Woven Interior and Slat Upholstery

Warranty, Shipping, & Returns

Free shipping via UPS – additional shipping fees apply to Alaska and Hawaii. Click here to learn more about our delivery process.

Furniture has a 30-night trial, extended to 100 nights if purchased alongside a matching mattress. Subject to 2 Year Limited Furniture Warranty.

Some states charge a Recycling Fee to help fund their mattress recycling programs. This state-mandated fee is added to the cost of each mattress, foundation, and bed frame you order and is not refundable.

Overall rating: 4.507752 / 5 from 774 reviews.

AI Generated Review Summary

The Casper Foundation offers excellent support and is praised for its sturdy and stable bed frame. Customers appreciate its easy assembly, stylish appearance, and the great sleep it provides. The delivery experience varies, with some reporting delays or missing items.

Summary topics

Product Quality: 5%
Bed Frame: 5%
Assembly Ease: 4%
Mattress Support: 8%
Product Appearance: 8%

Review topics: ["size","installation","height","firmness","color","weight","comfort","regrets","frame","instructions","fit","mattress","support","dreams","feel","problem","assembly","quality","base","directions","delivery","material","design","sleep","cover","finish","looks","bed","construction","box"].

Review highlights

"We’re finally able to get a solid nights sleep due to the great support and comfort that it offers." — Sara
"I love love love my Casper Dream Mattress and Base." — Jody
"Great sleep, great support, and incredibly easy setup!" — Charlie

Reviews

Poor customer service

"While the bed feels comfortable and easy to put together, it originally arrived and was missing a piece. It took several calls and three weeks before the piece was finally sent!"

— Kristen A. (4/5)

Well made, though it did

"Well made, though it did arrive with warped slat pack. Customer service shipped replacement without issue."

— Marty D. (5/5)

What can I say? It

"What can I say? It fit our bed frame perfectly and makes our bed perfect."

— Sandra C. (5/5)

Very comfortable bed. It’s a

"Very comfortable bed. It’s a little thicker than my previous which m makes it harder for my small dog to jump and down. I’ll keep this in mind next time I buy another Casper mattress, which I certainly will be doing."

— Eric M. (5/5)

Quality is not great and

"Quality is not great and does not fit the mattress well. Slats do not sit well in the top of the foundation. Creaky sounds when sitting on the bed."

— William Z. (3/5)

The mattress does not sit

"The mattress does not sit on it correctly. The boards on it are warped and I thought after a week of mattres being on it would be fine, but nope. So very disappointed would not recommend this product to anyone"

— Mariann F. (1/5)

The foundation is very low

"The foundation is very low key, just right for what we needed. Would fit probably any decor. I was a little worried about that beforehand."

— Barbara L. (5/5)

Our Casper mattress and foundation

"Our Casper mattress and foundation are the perfect combination."

— Gregory g. (5/5)

Foundation is great but the

"Foundation is great but the mattress slides a bit on it. Any suggestions to stabilize it are appreciated"

— Alan C. (3/5)

Hate to give a good

"Hate to give a good product a poor review. One of the interlocking corners broke when pulling the plug. I have a picture. And I want a refund for a defective panel. Thank you. Your site does not allow me to send the picture of the defect."

— James M. (1/5)

Q&A

Frequently asked questions

Can I use the foundation on the floor?

We don’t recommend putting the Casper foundation directly on the floor. The chambray upholstering that covers the foundation’s sides is not designed for it. Doing so can cause unsightly wear and we want your Casper bed set to stay in perfect condition — and be eligible for warranty. Mattress foundations are intended as a box spring alternative, and as such are best paired with a sturdy metal frame to ensure maximum durability and longevity.

Do you need a foundation for a mattress?

Much like the foundation of your home, a mattress foundation provides critical support for the entire bed. To keep sagging at bay, you need a strong and leveled base for your new mattress. This is especially true for memory foam mattresses and innerspring mattresses, as they require adequate support to maintain their structure.

At Casper, our mattress foundations are designed to protect all mattresses from degradation, no matter the bed frame or material. For sleepers with no bed foundation or just an old box spring, it’s time for an upgrade to truly complement your mattress purchase.

What is a bed foundation used for?

Unlike old box springs and sagging foundations, a quality mattress base provides a solid surface that ensures lasting support. Your mattress will remain in peak condition for years to come, alongside many sleep-supporting benefits:

Improved sleep and comfort
No mattress sagging
Secured mattress placement
Improved airflow

Alongside Casper mattresses, our bed foundations are designed for long-lasting support and act as the perfect box spring alternative for your mattress. With our compact slatted foundation design, you won’t be bothered by gaps or sharp pressure points.

What is the best foundation for a mattress?

In short, one that protects your mattress and improves your sleep. Mattress bases range from metal slats to solid platforms. At Casper, we believe the best mattress foundation is our wooden slat model. The closely-spaced beams evenly level your mattress, providing structure without sacrificing comfort. This bed base is great for all types of mattresses, including memory foam, innerspring, and hybrid mattresses, and provides greater support compared to a traditional box spring or foundation.

Is a foundation the same as a box spring?

Not quite. Both bed foundations and box springs provide a base support layer for any mattress type. However, box springs add a little extra give and increase breathability, while foundations are for overall support.

A box spring is any wood or metal bed frame containing coiled springs covered by cloth. This once-popular design is now mostly found on older beds.

A foundation is any non-spring bed base, from metal or wooden slats to solid platforms. Slat models, often referred to as slatted foundations, provide more air circulation and flexibility, while solid bases give the firmest support.

Both slats and solid foundations are an ideal box spring alternative for better mattress protection.

Learn more in our guide on Platform Bed vs. Box Spring.

What height should a mattress foundation be?

The ideal height for a foundation is between six and twelve inches. Shorter mattresses might benefit from a taller foundation and taller mattresses from a shorter base. When it’s all evened out with a bed frame and mattress, most beds are about two feet tall, though it’s really a matter of personal preference. Our mattress base measures 7.5” high, making it compatible with most beds.

Is the Casper Metal Bed Frame compatible with headboards?

Yes, but only when paired with our Rise Headboard Bracket attachment. This bracket is only compatible with Casper Attachable Headboards, Rise Adjustable Bases, and the Casper Metal Bed Frame.

Can I get another copy of the assembly instructions?

Absolutely! Click here to download a PDF of the Foundation setup guide.

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Feel the difference in person. Try products for yourself and chat with a Sleep Specialist at a store near you.

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Connect with a Sleep Specialist

Our Sleep Specialists are dedicated to helping you find the mattress of your dreams. Give us a call or chat with us now.

Email us Call +1-888-498-0003

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Two Hybrid Snow Pillows with a close-up of the inside material of the pillow. Text on the image reads "Down Alternative. Ultra soft foam. Medium feel."

Cool Sleep Bundle

From:

$216

Comp. Value:

$288

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Waterproof Mattress Protector

$109

Breathable Mattress Protector

$129

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Original Pillow

$75

What is Comp. Value?

A man unboxes his Casper mattress on his bed frame.

What is Comp. Value?

Our Comparable Value prices reflect the price at which we or third parties have offered this item or a comparable item.

How does Casper create the best value products for their sleepers?

Everything must help sleep and must be tested.

Our team regularly searches the market and tests comparable mattress and sleep products to ensure that ours offer top-quality materials, the most value for your dollar, and the best sleep experience on the market.

Every Casper mattress is designed and assembled in the USA.

As part of the Carpenter Co family, Casper mattresses are manufactured by the largest foam manufacturer in the world—no middle man, no markups, just the best prices for our sleepers.

We don’t rely on gimmicks—just 12+ years of expertise.

With 12+ years in the mattress and bedding industry, the Casper team knows what makes a great night’s rest and what’s just fluff. Our mattresses and bedding are obsessively-engineered and precisely-layered to help you get your deepest sleep ever.

We don’t sleep on getting you the best possible deal.

The Comp. Value shown for Casper products is never set it and forget it. Our team conducts thorough market research every quarter to ensure our comparable value is always accurate to the bedding market and the three most comparable products, so you never have to worry about missing out on savings.

A Casper store associate interacts with a person by a mattress.