Merax 8 Inch Memory Foam Mattress with 20-year Warranty, Queen Size Superior soft pad and a thick foam layer for optimal comfort Mattress layers include1 premium memory foam, 2.5 convoluted foam and 4.5 high resilient base support foam Cover: 280g polyester fabric with 3 ways zipper, non-slip bottom, FR sock inner cover It provides a supreme support to the body, relieving of pressure points along the neck, shoulders, back and hips Mattress comes compressed and rolled for easy shipping, please allow 48 hours to expand to its full size