Attention: Burton Snowboards & Gear can be shipped only within the United States. Description of Burton Frequency Helmet Maximum overdrive. Sleek street-racer styling and the ultimate in lightweight in-molded construction set a new standard for high-tech protection. Features: ClimaControl™ Ventilation System MC2™ Mechanical Fit and Comfort System SoftFIT™ Comfort Liner Vent Plugs Removable Goggle Gasket Audex™ Ear Pad Accessory Compatible Ultra Lightweight In-Molded Polycarbonate Shell Quick Clip™ Ear Pads Zip Clip™ Ratcheting Chin Buckle ASTM 2040 / CE 1077 Certified