Classic Collection Mattress Protector - CalKing 55% Cotton Includes: One protector per order (split bed sizes have two protectors); 300ct 100% waterproof (yet breathable) on underside of top sleeping surface All sizes fit up to 18" mattresses (don't worry on lower profiles, the waterproof lamination keeps protector in place!) Sewn elastic around entire protector opening Easy fitted sheet style; Color-Ecru