The Thermal Blok™ Technology can be used to cover your grill just minutes after turning it off. This cover is made from 100% waterproof, PU coated woven polyester. The inner lining is made with firefighter garment technology, so cover will not burn. Heat-resistant panel is designed to allow an ample amount of air flow. This cover will defend against rain, sun, snow, dust, dirt, tree sap, leaves and other harmful elements. Cover features ultrasonically welded seams and side straps for cinching.