A classically built helmet for alpine, rock, and ice climbing. The ABS shell resists sharp object penetration, and is lined with shock-absorbing polystyrene foam. The standoff created by the foam and the well-vented shell allows good air circulation. One size only. The adjustment system will accommodate head sizes between 54 and 62 (European). Yellow color provides high visibility in all conditions. Specs: Materials: ABS Shell, Polystyrene Interior Weight: 380 Grams Colors: Yellow, Red, Gray