FLY Racing Rayce Bicycle Helmet. Aerodynamic lightweight poly-alloy shell. Padded chin strap with a D-ring closure. Aluminum visor screws. CSPC certified EPS foam liner for protection. Weight: 930 grams ±50 grams (size M), 2.05 pounds ±0.11 pounds (size M). Removable and washable liner and cheek pads. True Functional Ventilation (TFV) - When in motion air is forced through multiple air intake vents, then passed through aligned vent channels in the EPS and exits out multiple rear exhaust vents. Replacement parts and accessories available. CPSC 1203, ASTM F1952-15, CE EN 1078:2012/A1:2012.