Breathable top protection against liquids, allergens and dust mites. Smooth, hypoallergenic fabric sleeps comfortably and will not change the feel of the mattress. Laboratory-certified H2Pro® liquid- proof membrane is dust mite proof, quiet and breathable. Universal Fit® fitted sheet style elastic ensures a secure fit for mattress depths 6″–22″ without shifting or bunching. 15-year non-prorated protector and mattress warranty when purchased on the same receipt.