Instantly stop Dust Mites, Bed Bugs, Allergens, Liquid Spills & Pet Dander from entering your Mattress or Ensemble Base. Our product kills all dust mites, bed bugs, and eggs trapped inside this encasement by putting an instant stop to their food source. An additional feature of this product is its ability to protect your mattress from wear, tear, and stains.A 90gsm knitted Jersey fabric is used which has a 0.2mm TPU lining. The microporous TPU lining is essential for this product to be effective. The hypoallergenic surface is soft, waterproof, and cool. Its design allows it not to trap body heat. These are not like plastic sheets and as such, DO NOT crinkle or make unwanted noise.Along with being hypoallergenic, this product comes with a velcro flap and micro bug zipper. The velcro flap helps to protect against accidental openings.Once installed, this product is designed to be used in conjunction with a standard mattress protector placed over the top of this item. This standard mattress protector can be washed weekly to avoid having to unseal your mattress. Our product is designed to stay installed on the bed unless the unit itself is dirty or has something spilled on it.