Approximately 9-10 inch mattress to keep you cosy. Get a Cool-Flex Gel Foam Mattress. Vacuum packed for your convenience and suitable for all types of bases. With three luxurious layers for a perfect night's sleep. A high density foam base, memory foam centre and a gel memory top. Hypoallergenic and dustmite resistant. | Cool-Flex Gel Foam Mattress | Wowcher