Cooling mesh fabric. Reusable and machine-washable. Stretchable Polyester fabric. One size fits most adults. SILVADUR™ Patented Polymer Technology Silver ion polymer targets enzymes, preventing production of malodors on the treated article. SILVADUR™ Provides Unsurpassed Odor Protection Sensory panel data proves that SILVADUR-treated textiles maintain odor protection through 50 washes. SILVADUR delivers a better, longer-lasting clean. Note: SILVADUR™ does not provide the user any protection from germs that may cause illness. Care Instructions: For best fit and comfort, wash before use. Wash on delicate cycle in cold water. Do not use bleach. Air dry or tumble dry low heat.