The Standard Encasement encloses the entire bed and prevents bed bugs, dust mites and allergens from entering your box springs and/or mattresses while also protecting from leaks and spills. The Standard Encasement encloses the entire bed and prevents bed bugs, dust mites and allergens from entering your box springs and/or mattresses while also protecting from leaks and spills. The Standard Encasement is an allergen-proof mattress cover that prevents bed bugs or allergens from entering your mattress. The mattress covers are water-resistant, bed bug bite-proof, machine washable, feature secure locking zippers, and are made in the USA. The full range of sizes fits cribs and mattresses from twin to California king. Laboratory tested and 100% certified bed bug and allergen-proof. Plush cover fabric ensures the highest level of comfort. Water-resistant material protects from all leaks and spills (blood stains, urine stains, sweat stains) that may occur. Machine washable in temperatures below 140 degrees. Never use bleach. Locking zipper and had stitched flap ensure security. Note: Never use bleach.--- Water-resistant material protects from all leaks and spills (blood stains, urine stains, sweat stains) that may occur.--- Waterproof material. Machine washable. Non-Woven Fabric. Stretchable mattress encasement. Inter-locking zipper.--- Machine washable in temperatures below 140 degrees. Never use bleach.--- Non-Woven cover fabric ensures the highest level of comfort.--- Locking zipper and had stitched flap ensure security. Weight: 2 lbs.--- Model Number: 1528-STD-1002