94% polyester 6% polyurethane; Neoprene; aerosilver antimicrobial. A health-care fiber, aerosilver increases your performance and endurance by wicking away moisture. The lightweight material reduces heat, providing a more comfortable wear. Enhanced silver ion technology inhibits the growth of odor causing bacteria.Benefits: Antimicrobial Silver Ion Technology; quick dry / moisture wicking; UV protection; reduces dust, pollen and microparticles; lightweight, soft, breathable bonded microfiber; form fitting comfort stretch in small, medium and large sizes; machine or hand wash with gentle detergent and hand dry; reusable and eco-friendly.