Smith Optics Vantage Helmet Hybrid SL Shell Construction 15.5 oz /440 grams Low-Profile Dual Regulator Adjustable Climate Control with AirEvac 2 Ventilation featuring 21 vents. X-Static Performance Lining, Snapfit SL2 Ear Pads and a Removable Ultra-Light Goggle Lock. Skullcandy Audio Systems Available