RTINGS.com has published detailed independent lab results for the Casper Snow Hybrid mattress, with cooling emerging as one of its strongest areas of performance.
How Well Does the Casper Snow Cool?
The Casper Snow earned a cooling score of 8.9 out of 10, one of the stronger results in its comparison set. RTINGS recorded 71 kJ of energy transferred during the first hour of testing, climbing to 198 kJ over a full eight-hour period.
Higher energy transfer values indicate that more heat is being pulled away from the sleeper, which generally correlates with a cooler sleep surface. This places the Casper Snow among the more breathable hybrid mattresses tested by the lab.
What's Behind Casper Snow's Cooling Performance?
This performance is especially notable given the mattress's memory foam comfort layers, since memory foam can tend to retain heat rather than release it.
Central to the Casper Snow's cooling design are its aluminum graphite bands, which work alongside a cooling cover, phase change material, and an airy pocket spring support layer to help draw heat away from the body.
Superoriented graphite conducts heat exceptionally well, which is why it is increasingly used inside mattress constructions. Positioned beneath the surface, it can continuously help move excess body heat away rather than allowing it to build up around the sleeper.
What the Results Mean for Hot Sleepers
For hot sleepers, RTINGS' results provide a useful benchmark for evaluating cooling performance. Independent testing offers measurable data on how effectively a mattress dissipates heat over time, providing a more objective way to assess cooling claims.