The Serta PerfectSleeper Bed Bug Mattress Encasement utilizes a complete zipper closure, making it bed bug proof. It's StainTech design easily releases stains, while the quiet waterproof technology protects your mattress from moisture. Available in Twin, Full, Queen, King and California King sizes. Features: Breathable, Stain Resistant, Allergen Barrier, Waterproof, Bed Bug Blocker Bedding Closure Type: Zipper Manufacturer Warranty: 3 Year Limited Bed Size: Twin Measurements: 75 Length/Inches, 39 Width/Inches Mattress Depth: Up To 15 In Deep Base Material: 100% Polyester Care: Machine Wash Thickness: Thickness Not Provided Comfort Level: Basic Protection Level: Maximum Mattress Securing: Skirt Mattress Pads & Toppers Type: Mattress Protectors Country of Origin: Imported