Mattress Mattress type Materials Firmness Height Certifications Trial Period Shipping Warranty Nolah Evolution Hybrid Organic cotton or GlacioTex cover, AirFoam Luxe memory foams, gel memory foam, AirBreath border gusset, pocketed coils Plush, luxury firm, firm 15 inches CertiPur-US, GreenGuard Gold 120 nights; 30-day break in period required before initiating return ($99 shipping fee) Arrives in a box as part of standard shipping; white-glove delivery available (mattress setup and old bed removal) for $225 Limited lifetime Helix Midnight Luxe Hybrid Tencel cover, memory foams, pocketed coils One option is 6.5/10 13.5 inches CertiPur-US, GreenGuard Gold 120 nights; 30-day break-in period required before initiating return Free for customers in the contiguous US Limited lifetime Bear Elite Hybrid Hybrid Phase change material (PCM) cooling cover, copper-infused memory foam, dynamic memory foam, pocketed coils Soft, medium, firm 14 inches CertiPur-US, GreenGuard Gold 120 nights; 30-day break-in period required before initiating return Free for customers in the contiguous US Limited lifetime Leesa Sapira Chill Hybrid Phase change cooling cover, cooling memory foams, pocketed coils Plush, medium firm, firm 14 inches …