The Rudy Project Sterling goes head to head with the best helmets on the market. This top-of-the-line model combines the three most important helmet features: light weight, ventilation, and fit. Weighing a mere 340g (size M), Sterling features an open, ventilated design with 18 huge vents and an exposed skeletal frame. The exposed frame may look like a style element, but serves to reinforce the helmet where others might shatter, and also as an 'eyewear dock' that will safely hold sunglasses from any manufacturer. For a comfortable, finely tuned fit, Rudy incorporated a disc retention system to easily adjust both height and circumference with the turn of a dial. To top it all off, the Sterling includes a unique bug guard netting on the inside of the helmet to catch any bugs or debris that come through the vents before they get to your hair. Includes a soft carrying bag, visor, removable bug stop & extra padding. CPSC certified. Black/fluo matte, white/red/silver matte, white/blue/silver matte, titanium/red matte. S/M (54-58cm) or L (58-62cm).