The Casper Snow is a high-end hybrid bed-in-a-box mattress marketed for cooling. Its support layer is made up of individually wrapped pocket coils, while the comfort layers are made of memory foam. The manufacturer advertises three cooling features under the term Snow Technology: Heat Delete Bands, flexible strips of aluminum graphite designed to draw heat away from the body; Phase Change Materials, which absorb and release heat as they change state; and the Snow Cover, a cooling mattress cover.
Our Verdict
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Light Weight
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Average Weight
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Heavy Weight
The Casper Snow is a good option for most side sleepers. This 'Medium' mattress offers decent body conformity for lighter people, so your shoulder will sink in enough for comfortable side sleeping. While you'd ideally want even better body conformity for side sleeping, it stands out as a good option for people in the lighter weight category. It offers great body conformity for average people and fantastic body conformity for heavier people, so it's even better at relieving pressure for side sleepers in those weight categories. Its plush, enveloping feel also helps reduce pressure on areas like your knees, and it offers solid support regardless of your weight.
Decent body conformity for lighter people.
Excellent body conformity for average people.
Fantastic body conformity for heavier people.
Plush upper comfort layers create an enveloping feel.
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Light Weight
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Average Weight
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Heavy Weight
The Casper Snow is best-suited for light and average back sleepers. It offers fantastic support for people in the lighter weight category, so your hips won't sink in further than the rest of your body. Its upper layers have a plush, enveloping feel and provide decent pressure relief, even for lighter people. While it's not quite as supportive for people in the average weight category, it still does a great job of keeping your hips supported. It's only slightly less supportive for heavier people; while your hips will sink a little more, it's still a suitable option for back sleeping.
Fantastic support for lighter people.
Great support for average people.
Very good support for heavier people.
Heavier people may want a more supportive mattress for stomach sleeping.
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Light Weight
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Average Weight
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Heavy Weight
The Casper Snow is best-suited for light and average stomach sleepers. The fantastic support for lighter people helps ensure your hips are supported and your back doesn't arch, and its enveloping upper comfort layers help relieve pressure on your hips and knees. While it doesn't support average or heavier people as effectively, its performance is still good enough for stomach sleeping. However, keep in mind that your whole body will sink quite a bit into the mattress, which gives it an enveloping feel, especially for heavier people.
Fantastic support for lighter people.
Great support for average people.
Very good support for heavier people.
Heavier people may want a more supportive mattress for stomach sleeping.
The Casper Snow isn't a durable mattress. It contains two layers of low-quality memory foam, which will start to deteriorate faster than higher-quality foam. As a result, this mattress will start to lose its shape and form permanent impressions faster than models made with good or high-quality foam.
None of the foam used is good quality, which can cause indentations and sagging.
The Casper Snow offers great pressure relief for most people. This mattress's soft upper comfort layers allow your entire body to sink in a few inches, providing an enveloping feel that helps relieve pressure. It also offers fantastic body conformity for heavier individuals, so you won't feel much pressure on your arms and shoulders when side sleeping. It also offers excellent body conformity for average people. Its body conformity performance for lighter individuals is only decent, so you'll feel more pressure when sleeping on your side. That said, it's still good for lighter side sleepers.
Decent body conformity for lighter people.
Excellent body conformity for average people.
Fantastic body conformity for heavier people.
Plush upper comfort layers create an enveloping feel.
The Casper Snow is a supportive mattress for most people. It's most supportive for lighter individuals, so the heavier parts of your body, such as your hips, won't sink in any more than the rest of your body, making it well-suited for back and stomach sleeping. While it's much less supportive for average people, it still does a great job of keeping your spine aligned. Support for heavier people is slightly worse, but still very good and comparable with some firmer mattresses. The mattress's lower comfort layer is zoned, with extra firmness in the lumbar area, which likely helps it provide good support for a wide range of people.
Fantastic support for lighter people.
Great support for average people.
Very good support for heavier people.
Heavier people may want a more supportive mattress for stomach sleeping.
The Casper Snow delivers an excellent cooling performance. It keeps you very cool both as you fall asleep and throughout the night, even if you sleep hot.
Excellent cooling.
The Casper Snow offers excellent motion isolation and dissipation. While you feel larger movements, they're fairly localized and don't last long, so when your partner shifts sleeping positions, you feel it in the lumbar region, but it doesn't last long enough to disturb or wake you.
Excellent motion isolation and dissipation.
The Casper Snow has poor responsiveness. Its comfort layers are made of low-resilience memory foam that doesn't recover its shape quickly after compression. It's also not very bouncy, which also contributes to making it more difficult to move around and shift sleeping positions.
Poor responsiveness makes it difficult to shift sleeping positions.
Performance Usages
Changelog
- Updated Mar 09, 2026: We converted this review to Our Verdict section to clearly show the suitability of a mattress for your weight and sleeping position.
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Updated Feb 10, 2026:
Compared its edge support to the WinkBeds Plus's.
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Updated Jan 19, 2026:
Added a note that the Tuft and Needle Mint has higher responsiveness.
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Updated Dec 12, 2025:
We mentioned the Brooklyn Bedding Signature Hybrid in the Edge Support box for users looking for more robust support in this area.
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Differences Between Sizes And Variants
The Casper Snow hybrid mattress comes in Twin XL, Full, Queen, King, California King, and Split King, and the manufacturer describes it as having a medium firmness. We tested the Queen-sized model. See the label for our unit.
The design of this mattress is location-dependent; there's also a Casper Snow (Canadian Version), which we tested separately. If you encounter another variant, let us know in the comments, and we'll update this review.
If you come across another variant or have experience with a variant that performs differently, let us know in the comments.
Popular Mattress Comparisons
The Casper Snow mattress is a high-end hybrid mattress from Casper Sleep, which helped popularize the bed-in-a-box model. Their lineup of mattresses is split into Foams, Hybrids, and Maxes, with just one or two options in each category.
The biggest advantage of this mattress is its excellent cooling performance. It keeps you cooler than most other mattresses as you fall asleep and throughout the night, though it doesn't stay quite as cool as the Purple Mattress. On the other hand, compared to other hybrids, such as the Beautyrest Silver BRS900, this mattress has poor edge support, which limits the comfortable sleeping area. It's also notable that both of this mattress's comfort layers are memory foam. As with the Tempur-Pedic TEMPUR-Adapt, this double layer of memory foam provides better-than-average motion isolation, making it a good choice for those who sleep with a partner who tosses and turns. That said, the memory foam layers also impact the mattress's responsiveness. Like the Zinus Original Green Tea 2024, it responds very slowly after being compressed, which you may or may not enjoy, depending on your preference for the slow, hugging feeling of memory foam.
If you'd like more options to consider, see our picks for the best mattresses and the best memory foam mattresses.
The Casper Snow and Helix Midnight Luxe 2025 have different strengths. Both have a medium firmness level, but you may prefer the Casper if you like feeling enveloped by your mattress, since it has a higher sinking level. The Casper offers much better cooling and motion isolation, but has slow responsiveness, so you may feel stuck in place. The Helix is much more responsive and has better edge support, making it easier to get in and out of bed and more comfortable to sleep near the edge of the bed.
You might prefer either the Casper Snow or the Tuft and Needle Mint, depending on your preferences and sleeping position. The Casper is a slow-moving memory foam mattress with a hugging feel. The Tuft has similarly soft upper comfort layers, but a much more responsive, less contouring sleeping surface. The Tuft and Needle offers better motion dissipation, while the Casper is more cooling. Both stand out as good options for side sleepers, including lighter side sleepers, but the Casper is more supportive, making it better for back and stomach sleeping.
The Bear Elite Hybrid is better than the Casper Snow for most people. The Bear is a lot more responsive, making it significantly easier to move around and change sleeping positions. It also offers much more edge support, so you can sleep near the sides without feeling like you might fall off, unlike with the Casper. On the other hand, the Casper is a bit better at isolating motion, so you feel less of your sleeping partner's movements. It's also cooler, and while the Bear still performs very well in this regard, if you sleep hot, you may prefer the Casper.
The Casper Snow is a better choice for most people than the Boring Hybrid. The Casper provides both better support and better body conformity, making it a more comfortable option for most sleepers regardless of weight or sleeping position. While both options work well for hot sleepers, the Casper offers more efficient cooling. On the other hand, the Boring is much more durable, so it will resist sagging and indentations for a lot longer. It's more responsive, too, making it easier to move around.
Test Results
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