Edge S4000 Plush - FullThe Plush, Edge Essentials style from Sleeptronic features CoolTex which is engineered to keep you cool, dry, and comfortable. . This mattress is equipped with two layers of Strataflex, a highly resilient quilting foam that creates a butter soft layer of comfort and support that is built to last. This mattress has polygel cooling positioned throughout the quilted layers to regulate the mattress temperature. There are convoluted comfort layers