Performance Fabric Protection with Superior Air Flow without compromising the comfort or feel of your mattress. The Ultra-thin Sheex performance mattress protector features a breathable, smooth performance stretch fabric surface that sleeps comfortably and will not change the feel of the mattress. Ultra-lightweight and stretchy, the performance fabric gives you the ventilation and protection you need without the bulk. It protects and breathes at the same time while keeping quiet to eliminate distraction while sleeping. The liquid-proof membrane creates a quiet, and breathable barrier against allergens and dust mites while allowing for airflow and mattress TOP + 4 Side Protection. Quiet. Cool. Protection with Sleep Tech Technology for Constant Air Flow. Let Sheex own the night, so you can own your day. Features: Sheex performance Sleep | Comfort can not be compromised Protects Top & 4Sides of Mattress Advanced Lightweight performance Fabric with Sleep Tech Technology. Smooth Stretchy Surface. Breathable with constant Air Flow. Sheex Waterproof mattress protector membrane keeps liquids out while allowing air to pass through, allowing you to stay at your ideal sleep temperature while protecting your mattress. 100% Waterproof Protection Protects Your Mattress and Extends Its Lifespan Stops Allergens and Dust Mites Keep your mattress looking and feeling brand new without the heat buildup Moisture Wicking. Quick Dry. Quiet. Fitted Sheet Style is Easily Removable. Adjustable Base Friendly Designed with thick elastic to ensure a secure precision fit Deep Pockets for Mattress Depths 6-18" Performance Fabric Surface: 87% polyester, 13% spandex | Sheex Waterproof Membrane Dimensions: King/CalKing: 78" x 80" x 17" Care: Use cold water and choose a regular cycle with no bleach or fabric softener and no fabric dryer sheets. Tumble dry on low, and don't worry about having to iron - Sheex are wrinkle-resistant! Sheex wash and dry wonderfully and also hold up well against fading and shrinking. Sheex Elevated Performance Mattress Protector - King/California King - Bright White