Medium Firm Feel for most sleeping positions, innovative 5-zone spring support with 3 layers premium foam for better support and pressure relief, pocket springs for motion isolation, CertiPUR-US Certified foam, Fiberglass-Free Fire cotton Inner Cover, Buy With Confidence by 100 nights trial and 10 years supportMedium Firm Feel for most sleeping positions, innovative 5-zone spring support with 3 layers premium foam for better support and pressure relief, pocket springs for motion isolation, CertiPUR-US Certified foam,