Boyd Pure Form 1000 9" Engineered Latex Mattress (King (76x80)) Removable and washable cover! 3" Stay-cool channel vented tri-zone engineered latex foam. Multiple channels in the foam provide cool refreshing air circulation. Excess heat is directed away so you can sleep in a cool comfortable environment. Tri-zone construction provided enhanced lumbar support 6" High density Reflexa foam base 10 year limited warranty