FEATURES: GameBreaker AURA Headbands are independently tested by the Virginia Tech Helmet Labs. The AURA was rated among the world's #1 safest soccer headbands, earning 5 of 5-STARS AURA Headbands are the only protective headband on the market protected by D3O, making it the lightest, thinnest and most comfortable 5-STAR headband out there Powered by D3O(R): With no hard or sharp components to snag or scrape other players, D30(R) liner reduces the risk of sustaining an impact-related injury 100% Peripheral Vision Inner Elastic Retention Band No-Slip Silicone Backed Forehead Anti-Microbial Quick-Wick Fabric Treatment SIZE & FIT: GameBreaker AURA Headbands are engineered with "SNAP-TECH CELLS" along the sides that are designed to snap apart and work with the inner band for an individualized, snug, comfortable fit. In the event you Aura Headband fits tighter than desired, pull gently on each side of a snap-tech cell connection and pull outwards until you feel the cells snap apart. NOTE : Once snapped apart, the cells DO NOT reconnect ADDITIONAL DETAILS: It is an ideal women's and men's soccer headband due to its industry-defining smart molecule impact reduction technology. The AURA is suitable for all ages and skill levels. Designed for Soccer players, it can be used for a wide range of athletes. Cheer, Flag Football, Rugby, Field Hockey, Volleyball, MMA, and many more! 10mm Thick Machine Washable (Air Dry Only) Sizing is with the snap-tech cells closed, relaxed size is with all snap-tech cells open, note once cells are snapped apart they DO NOT reconnect