Durable and very versatile, the BOREO helmet is suitable for climbing, mountaineering, caving, via ferrata, and canyoning. Thanks to its hybrid construction, the helmet is both compact and head-covering. Protection against lateral, front, and rear impact is reinforced. Optimized volume on the head and wide ventilation holes make it a comfortable helmet for all activities.. . Rugged: . . Hard outer shell is impact and scratch resistant for optimal durability. Hybrid construction with thick ABS shell, an EPP foam liner, and an EPS foam liner makes it compact on the head. Soft headband conforms perfectly to the shape of the head and folds into the shell for storage and transportation . . Head-covering design for optimal protection against lateral, front, and rear impact: . . Carries Petzl's TOP AND SIDE PROTECTION product label. Head-covering shape, lower in the rear, offers reinforced protection. . Versatile, for a variety of activities: . . Suitable for climbing, mountaineering, caving, via ferrata, and canyoning. Four clips for headlamp attachment . Compatible with the VIZION eye shield. . Material(s): ABS shell, expanded polypropylene (EPP) liner, expanded polystyrene (EPS) liner, polyester webbing. Certification(s): CE EN 12492, UIAA. A042AA00 ??? S/M. . Weight: 10 oz. (285 g). Head Circumference: 18.9-22.83 in. (48-58 cm). Color: White. . A042AA01 ??? M/L. . Weight: 10.4 oz. (295 g). Head Circumference: 20.87-24 in. (53-61 cm). Color: White. . A042BA00 ??? S/M. . Weight: 10 oz. (285 g). Head Circumference: 18.9-22.83 in. (48-58 cm). Color: Blue Jean. . A042BA01 ??? M/L. . Weight: 10.4 oz. (295 g). Head Circumference: 20.87-24 in. (53-61 cm). Color: Blue Jean. . 3342540820159 32764800022 A042