Rest assured knowing your mattress is clean night after night with the waterproof protection in the MicroShield Mattress Protector from SensorPEDIC. This protector features luxury fabric that is lab tested to block 99.78% of all allergens and is waterproof and stain resistant, while the stretch-to-fit bedskirt can fit mattresses up to 18 inches deep to ensure a secure fit atop your mattress for added protection.