Giro G10 - 06 Next! The G10 is the new boss, and it's right on time for riders pushing toward big moves and bolder lines in wide open terrain. Features: Removable Earpads Goggle Notch ASTM F2040 Sizes : Super Fit Audio : Compatible with Tuneups, Tuneups II Construction : In-mold Ventilation : 14 Super Cool Vents / Adjustable Thermostat Control Weight : 15.5 oz. / 435 g.