Casper One Mattress Review

Casper One Mattress: An Introduction

Founded in 2014, Casper was one of the first online mattress-in-a-box stores. Since its founding, the company has developed a line of mattresses based on its bestselling option, the Casper Original Mattress. 

In 2024, Casper introduced a brand new product line. The Casper One is the only all-foam model in this lineup, effectively replacing the Casper Original as the brand’s marquee foam mattress.

We’ll discuss the One’s features and how it performed during our in-house tests in areas like temperature control, edge support, and durability. We’ll also explain which types of sleepers are most likely to find this mattress a good fit. 

How We Review

Our team of testers evaluates every product we review by using a rigorous product testing methodology to bring you accurate and relevant information. Our testers focus on the product features that matter most when choosing the best mattress for you.

What’s It Like to Sleep on the Casper One Mattress?

The Casper One Mattress has a balanced, durable feel that works particularly well for most side sleepers.

The comfort system is made up of two foam layers designed to provide contouring and support while also helping you sleep cool. The top polyfoam layer, which includes thousands of small perforations, promotes airflow and draws warm air away from your body. Underneath, a layer of zoned memory foam allows your shoulders to sink into the mattress while also stabilizing your hips and midsection at the same time. 

Meanwhile, the polyfoam support core keeps the bed stable and supportive, allowing for easy movement across the surface.

Casper One Mattress Pros and Cons

Sleeping Positions, Body Weight, and Firmness

Our testing team rated the Casper One a 6 on our 10-point firmness scale. This represents a medium firm rating. 

Your comfort on a mattress is determined by a variety of factors, such as sleep position and body weight. The Casper One performed best for side sleepers during our sleep lab tests, specifically those between 130 and 230 pounds. Our tests indicated that back and stomach sleepers over 230 pounds may want to consider a firmer mattress with more midsection support. 

Casper One Mattress

Side Sleepers

Side sleepers need support near their hips and shoulders for proper spinal alignment, and the Casper One’s zoned memory foam comfort layer does a good job of providing this. The Casper will likely work best for side sleepers under 230 pounds, while those over 230 pounds may need a firmer model like the Casper Element Pro.

Back Sleepers

Back sleepers need a mattress that provides good pressure relief without skimping on support. While back sleepers under 230 pounds will likely get the right amount of support and stability in the lumbar region with the Casper One, those over 230 pounds may need a firmer mattress. 

Stomach Sleepers

It’s important for stomach sleepers to find a mattress that helps them avoid putting too much stress on the neck and spine. The Casper One provides good support for stomach sleepers under 130 pounds. However, those who weigh more may sink into the mattress too much, which can cause spinal misalignment and back pain.

Our Performance Ratings

What Is the Casper One Mattress Made Of?

The Casper One Mattress has three foam layers. The first comfort layer is made with open-cell polyfoam. This material is designed to assist with airflow, directing warm air away from the body while you sleep. The second zoned memory foam layer contains a mixture of softer and firmer foams. This design provides structured support around the midsection and hips while allowing for more contouring near the shoulders and feet. 

The polyfoam support core gives the bed a stable and durable base. All of Casper’s foams are CertiPUR-US certified, indicating they have low VOC emissions.

Casper One Mattress Construction Layers

How Much Does the Casper One Mattress Cost?

The Casper One has a mid-range price-point compared to similar foam beds, but is also the most affordable mattress in the Casper lineup. While there are less expensive foam mattresses on the market, they generally don’t include a zoned comfort layer or cooling system like the Casper One. This construction helps the Casper rate well in just about every performance category, which may make it worth the cost for some shoppers.

Which Casper Mattress Is Right for You?

Casper offers five mattress models that encompass two mattress types.

The Casper One is the company’s only all-foam bed. This choice is ideal for people who enjoy the soothing cradle of foam layers, as well as shoppers with limited budgets.

The Casper Dream Hybrid, Dream Max, Snow Hybrid, and Snow Max are hybrids. These mattresses feature cushy foam layers, but coil support cores result in stronger support and more bounce. The Snow Hybrid and Snow Max are built with cooling components to help hot sleepers stay cool.

Casper Mattresses at a Glance

Discounts and Coupons

Casper offers product discounts throughout the year, but the biggest savings become available during holiday events like Black Friday. Casper also offers year-round product bundles to help cut costs. 

Many of the company’s bundles include a mattress protector and bed frame in addition to other sleep products. Casper provides a year-round 20% discount for teachers, students, health care workers, and military members.

Where Can You Buy the Casper One Mattress?

You can purchase a Casper mattress on the company’s website. They are also sold at brick-and-mortar Casper stores across the U.S. and are available from popular retailers like Amazon, Target, and Macy’s. Depending on where you make your purchase, availability, pricing, discounts, and warranties may vary.

Casper One Mattress FAQ