The Sapphire Firm mattress is a premium quality mattress with a designer look. The luxurious stretch knit cover is multi quilted with 1.5 inch high density convoluted foam and Wolf's "whisper shield" fiber. It features sta-rite inner quilted fiber plus a layer of 1" firm foam with a hi-profile 288-coil innerspring. Hi-profile innerspring, orthopedic firmness+comfort, designer stretch knit fabric. Made by Wolf Corporation, the oldest mattress manufacturer in the USA under continuous family ownership!