Six-point, webbed suspension system conforms to wearer’s head for maximum comfort, safety, and stability; chinstrap designed to reduce risk of helmet loss during fall (strength greater than 50 daN); includes foam inserts in two thicknesses for custom fit. Sliding vent covers allow for adjustments to air circulation inside helmet. Slots, clips, and inserts for mounting ear and face protection and headlamps. Weight: 455g. Circumference: minimum – 53cm, maximum – 63cm. Certifications: CE EN 12492, UIAA, ANSI Z89.1-2009, Type I Class C. Complies with EN 397 and EN 12492 for protection against impact and EN 397 for protection against lateral deformation and for wear in cold temperatures.