Recommended for mountaineering, maintenance and rescue operations, as well as for works at height where the risk of falling is high. Thermoformed inner shell, adjustable chinstrap, 10 ventilation slots for better comfort. Ratchet headband, suitable for head circumferences from 52 to 61 cm. Slots for visor fitting (visor ref. HP 10 200 01 - see below), small hooks for headlamp, side slots for hearing protection fitting (accessories not included). Compliance: EN 12492:2012. Chinstrap breaking strength: 50 daN.