Clean Rest Premium Water-Resistant, Allergy and Bed Bug Blocking Mattress Encasement, King 100% Microlux Imported The CleanRest Premium Mattress encasement is commercial grade quality protection and the most effective way to protect from bed bug infestation MicronOne Allergy Blocking Technology protects your sleep by creating a barrier between you and dust mites or pet dander Water-resistant top is soft and quiet and machine washable Fully zippered encasement with elastic sides that adjust to fit mattresses from 12"-21" depth King size encasement fits 78"x80"