Smith Sport Optics sets the standard for high performance sunglasses, goggles and helmets. Smith innovations include the patented Regulator lens ventilation. Smith targets active people who are seriously into the hottest sports, such as snowboarding, free style skiing, surfing and mountain biking. Trendy, fashion conscious people with a strong sense of individuality. For the woman that knows what she wants, and is ready to demand it. Designed for her, with the exquisite comfort of a plush Smith fit, and all the features expected of a Smith premium technology helmet, Smith is pleased to introduce the Valence Low-Profile Regulator Adjustable Climate Control Hybrid Shell Construction Snapfit SL Ear Pads Removable Ultra-Light Goggle Lock Women"s X-Static Performance Lining Adjustable Smith x Boa® Fit System 18 Vents AirEvac 2 Ventilation Skullcandy™ Audio Systems Available SIZING: (Boa® FIT SYSTEM) + Small 51-55 cm + Medium 55-59 cm + Large 59-63 cm CERTIFICATION: ASTM F 2040, CE EN 1077:2007 CLASS B, CPSC CE EN 1078 WEIGHT: 18.5 oz / 530 grams