VIRGINIA TECH HELMET LAB - THIRD-PARTY IMPACT TESTING GameBreaker products are independently tested and published by the Virginia Tech Helmet Lab, a nationally recognized authority in impact testing. The GameBreaker AURA earned a 5-STAR rating, the highest score available. The AURA is the only protective headband powered by D3O® smart molecule technology and provides 60% coverage, ranking it highest among all headbands to receive a 5-STAR rating. See the rankings here. PRODUCT FEATURES POWERED BY D3O® POWERED BY D3O® SMART MOLECULE TECHNOLOGY 100% PERIPHERAL VISION INNER ELASTIC RETENTION BAND FOR A SECURE, STABLE FIT NO-SLIP SILICONE-BACKED FOREHEAD GRIP ANTI-MICROBIAL, QUICK-WICK TREATMENT 10mm THICK - THINNEST AND LIGHTEST ON THE MARKET NO METAL OR HARD PLASTIC COMPONENT PARTS MACHINE WASHABLE ENGINEERED FOR FIT & COMFORT GameBreaker AURA Headbands are built with Snap-Tech Cells, designed to flex and separate as needed, working in combination with the inner retention band to deliver an individualized, snug, and comfortable fit for a wide range of head shapes and sizes. SIZING Please refer to the sizing chart below for instructions on how to measure and select the correct size.