Contains antimicrobial protection, which inhibits the growth of bacteria that causes odors and stains. Withstands repeated launderings without shrinkage, while looped ends and tailbanding reduce tangling for like-new performance after every wash. Colorfast fibers will not shrink or fade with repeated launderings. Pre-laundered and pre-shrunk for longer product life. PVC-coated mesh headband prohibits moisture penetration and resists chemicals.