If you overheat primarily from below — you wake up with a hot sweaty back, your mattress feels like it is radiating heat — a mattress topper can address this without the expense of replacing the mattress. Here is what actually works.
What a Mattress Topper Does
A mattress topper sits on top of your mattress and creates a new contact surface between you and the mattress. For hot sleepers the goal is a topper that either conducts heat away from the body or allows significant airflow rather than adding another insulating layer.
Mattress Topper Types for Hot Sleepers
Latex toppers are the best traditional option for hot sleepers. Natural latex has an open-cell structure that allows airflow and does not retain heat the way memory foam does. It also provides pressure relief without the heat-absorption that makes memory foam problematic. Gel-infused memory foam toppers are better than standard memory foam toppers but still retain heat over extended periods. Wool toppers are naturally temperature-regulating and breathable. Better than synthetic options for hot sleepers. Featherbed toppers are soft but trap heat. Avoid for hot sleepers. Standard memory foam toppers make the heat problem worse. Avoid entirely.
The Cooling Mat Alternative
A dedicated cooling mat designed for sleeping is a more targeted solution than a mattress topper for hot sleepers. The Stillwell Cooling Mat uses cooling bead technology to draw heat away from your back, hips, and legs through the night. It lays directly on your mattress and you sleep on it. This is specifically engineered for the heat-from-below problem rather than being a general comfort layer. See The Cooling Mat here.
Combining Both Approaches
The most comprehensive approach combines a cooling mat below and a cooling blanket above. The Stillwell Cooling Mat handles the surface below. The Stillwell Cloud handles the surface above. Together they address the full sleep temperature environment. See The Cloud here.