Gotcha The Pure Collection Organic Cotton Jersey Mattress Protector Cal King Natural Cotton Made in USA INCLUDED: One mattress protector (split bed sizes have two protectors). 100% waterproof (yet breathable) polyurethane underside is inert and non-toxic. Undetectable under your fitted sheet. Protects against dust mites and fluids. No dyes or harsh chemicals. Biodegradable packaging of hemp and corn film. 5 Year Limited Warranty. Size: Cal King. Mattress Depth: Deep Profile up to 18". Color: Natural.