Edge S3000 - XTRA Firm - TwinThis is an Extra Firm Edge Essentials style from Sleeptronic. This mattress has a deep freeze layer in the quilted panels that not only ensures a cool nights sleep, but also wicks away moisture, ensuring a dry nights sleep. This mattress has an Ultra High Density 1. 5 LB polyfoam support layer which is 50% stronger and more resilient than typical support layers. The extra firm quilting & support layers provide the firm comfort and noticeable support