Casper Mattress Review – Test Lab Ratings

The Casper One’s all-foam construction allows it to isolate motion very well. A two-layer comfort system absorbs movement rather than transferring it across the surface of the bed. The polyfoam top layer has a slightly bouncy feel while reducing motion transfer, and the layer of memory foam further absorbs motion.

This strong motion isolation might reduce nighttime disturbances when your partner moves around on the mattress, which may be particularly important for sleepers who wake up easily.

Sleepers frequently experience pressure points near their hips and shoulders. Since these body parts are usually wider and heavier, they put more pressure on the mattress. If the mattress doesn’t have much contouring, this can lead to pressure build-up.

The Casper One conforms closely to the sleeper’s body, which can help redistribute the sleeper’s body weight and relieve pressure points. The tri-zoned memory foam layer provides extra support around the midsection to prevent the sleeper’s hips from sinking in too deeply. People who suffer from aches and back pain may appreciate this combination of pressure relief and support.

The Casper One’s medium firm feel may be best suited for sleepers under 230 pounds. Most individuals in this weight range should be able to sink in enough for comfortable contouring and balanced support. The mattress may be slightly too soft for sleepers over 230 pounds. They could experience more pressure points if the foam overcompresses.

The Casper One tends to trap less heat than many all-foam mattresses. Air circulates through the perforated polyfoam top layer, which allows heat to dissipate away from the sleeper’s body.

The second layer of the comfort system uses a zoned memory foam that is firmer in the middle to prevent sinkage. This material is more breathable than most high-density foams. While the two-layer comfort system conforms closely to the sleeper’s body, it does not trap as much heat as many competing models.

Most all-foam models do not have reinforced edges. When the sleeper nears the perimeter of the bed, the compression of the foam may make the edge of the bed feel unstable, which may make it more challenging to sit or sleep near the perimeter.

The Casper One’s thicker support core gives the edge a sturdier feel than many all-foam mattresses. However, sleepers may still notice some sinkage when they sit or sleep close to the edge of the bed. Individuals who weigh over 230 pounds will likely experience more sinkage than individuals who weigh less.

Compared to many other all-foam models, the Casper One is somewhat more responsive. This may make it easier to move across the surface and change position during the night.

Memory foam has a reputation for responding slowly when weight is removed. This can create a “trapped in the bed” feel that may make it more difficult to change position.

The Casper One combats this tendency by using a top layer of polyfoam, which springs back more quickly than most memory foam. Additionally, the second layer of the mattress is a zoned memory foam with a bit more firmness and resilience than an even plane of soft, cradling memory foam.

Any mattress may emit an odor when first introduced into your home. This is particularly likely when a mattress ships compressed since it hasn’t had time to air out yet. Mattresses that contain memory foam and/or polyfoam are especially prone to off-gassing odors due to volatile organic compounds (VOCs) from the manufacturing process. VOCs are usually considered harmless.

The Casper One’s off-gassing odors are similar to those of other all-foam mattresses. While the mattress may emit initial off-gassing odors, these odors should dissipate within a few hours to a few days if you leave your mattress in a well-ventilated room.