The Sapphire is in natural damask micro quilted breathable cover to give better air circulation. There are 1000 pockets (in the 5’0) which is topped with 70mm of visco elastic memory foam thus giving the sleeper not only the advantages of pocket springing but also the lift & support of memory foam hence mattress having the benefit of being rotatable non turn. FREE DELIVERY Specification 1 x kingsize 5FT mattress