Completely Surrounds Box Spring To Block Out Liquids Bed Bugs Dust Mites And Allergens Fabric Surface With 100% Waterproof Layer Zipper Closure For Complete Encasement Machine Washable And Dryer Safe Twin Size Includes 39 By 75 Encasement 10 Year Warranty 9 Depth Features: Allergen Barrier, Breathable Bed Size: King Measurements: 80 Length/Inches, 78 Width/Inches Base Material: 100% Polyester Care: Machine Wash, Tumble Dry Protection Level: Moderate Mattress Pads & Toppers Type: Mattress Encasements Country of Origin: Imported