HomeAll ProductsAdjustable vent safety climbing helmetABS shell, adjustable vent at the back. EPA foam lining. 6 point suspension with ratchet knob adjustment. Designed for mountaineeringAdjustable vent safety climbing helmetSKU: Y4006W10AFComplianceCE EN 397:2025 TYPE 2 -30℃ (pending) CE EN 12492