The Allswell Cool is a hybrid mattress with four layers of material including copper poly foam, memory foam, pocketed coils, and support foam.
You can see an inside look at the mattress in the photo below.

From top to bottom, the layers on the Allswell Cool include:
- 1.5″ copper poly foam
- 1.5″ memory foam
- 8.0″ pocketed coils
- 1.0″ support foam
The Allswell cover is made of a quilted gel-cooling fabric that is designed to keep you from overheating during sleep.