Fern & Willow Premium Extra-Long King Hypoallergenic and Everything-Resistant Mattress Protector - Vinyl Free - Fits Twin, Full Size, Queen, King, and Cal King Hypoallergenic design protects your bed from urine, sweat, allergens, fluids, and dust mites! Breathable back membrane coating keeps your mattress cool day and night Does not change the feeling and comfort of your mattress Fitted sheet design fits Twin, Full Size, Queen, King, and Cal King sizes Lifetime guarantee: email us at amzn@fernandwillow.com