The Bamboo Viscose Jersey Mattress Protector with 2 King Pillow Protectors by Dreamtex Home is 100% waterproof yet cool and quiet, setting you up for a peaceful night's sleep. These Greenzone Collection mattress and king-sized pillow protectors protect your bed from head to toe, preventing dust mites, which are common but very aggravating for allergy sufferers. This set also protects your mattress and pillows against moisture. Bamboo viscose is all-natural, hypo-allergenic, and machine washable. Greenzone Collection fabrics are tested and declared free of metals, phthalates, and other harmful chemicals by the internationally accredited Oeko-tex certification system.