Material: high density EPS,PC and PVC. The lining: silver velvet lining,effectively reduce the shock pressure,streamlined tail design
One size: head girth: 22.05-24.8 inch/(56-63cm), head width within 7.12 Inch ,head length within 8.27 Inch.
Lightweight:only 0.210 kg/7.4 OZ; 41 cooling vents with internal channels optimize airflow.
Adjust the tightness of head circumference size flexibility.
Best used for All Mountain riding,offer a safe riding.