The Vista II Soft Tight Top mattress by Sherwood Bedding features a peformance stretch-knit fabric specifically designed with cooling yarns for a cool-to-the-touch surface, layers of soft foam to provide Plush comfort and support for your body, the Soft Gel-infused Foam that conforms to your body and helsp you sleep cool, Medium-Firm Gel-infused Foam, and High Coil-density system with a strong foam border that delivers personalized comfort, allowing you to sleep to the edge of your mattress.