3-point, adjustable linesman helmet without visor for improved upward vision. Features polyamide harness and thermoformed sweat band. Fits head sizes 53 to 63cm. Designed for working at height. Electrical insulation up to 1000V AC or 1500V DC. Thermoformed Sweatband Comfortable Safety Harness ABS Plastic Construction Lightweight Design Rotor System for Harness Adjustment Thermoformed Sweatband Comfortable Safety Harness ABS Plastic Construction Lightweight Design Rotor System for Harness Adjustment