Strenth: waterproof,dust mites,bed bugs proof , fully fitted to our luxurious mattresses. Protect liquids from staining the bed Product Feature Highlights:Breathable polyurethane backing on all sides makes these covers completely waterproof.Not hot to sleep on- made from breathable membrane . You will not notice any difference in temperature while sleeping.Locking zipper offers the best protection.Certified against bed bugs, dust mites, and other allergens.Machine-washable and dryable makes cleaning super easy.