Smith Transport Helmet: Never before has technology this advanced been brought to the masses. The all-new Transport utilizes Hybrid In-Mold technology to minimize mass and maximize ventilation without sacrificing one ounce of protection or style. Patents pending. Removable Goggle Lock Low-Profile Regulator Adjustable Climate Control X-Static Performance Lining Snapfit SL Ear Pads AirEvac 2 Ventilation Hybrid In-Mold Construction Adjustable BoaA(R) Fit System 16 Vents SIZING: (Boa FIT SYSTEM) + Small 51-55 cm + Medium 55-59 cm + Large 59-63 cm + X-Large 63-67 cm Skullcandy Audio Systems Available CERTIFICATION: ASTM F 2040, CE EN 1077:2007 CLASS B WEIGHT: 16 oz / 450 gram Sale and previous season’s helmets may not include original packaging. The helmets are authentic and unused, but with limited storage (in some of our stores) packaging has been discarded.