The Health+ Allergen Control Mattress Pad is constructed from a 300-thread count soft jacquard shell, a woven material with proven durability. The hollow-slick antimicrobial treated polyester fill is a resilient hypoallergenic material that promotes air circulation, and inhibits the buildup of bacterial growth, mold, mildew, and dust. It comes with a 15” fully elasticized stretch-to-fit skirt.