This HB2 headband is a 1-inch wide elastic band, the main body is black and gray The headband has ventilation holes, which can effectively dissipate heat There is a 11inch long silicone anti-slip strip on the inside of the headband where it fits the forehead, which can prevent sweat on the forehead from sliding onto the face, and also prevent the headband from sliding off due to vibration The headband has an adjustment buckle, which can adjust the circumference of the headband according to the head circumference, and the maximum circumference can reach 23.6inch The Weltool logo and decorative strips on the outside of the headlamp band have reflective properties, and have a reflective effect when illuminated by light This HB2 headband is a 1-inch wide elastic band, the main body is black and gray The headband has ventilation holes, which can effectively dissipate heat There is a 28 cm long silicone anti-slip strip on the inside of the headband where it fits the forehead, which can prevent sweat on the forehead from sliding onto the face, and also prevent the headband from sliding off due to vibration The headband has an adjustment buckle, which can adjust the circumference of the headband according to the head circumference, and the maximum circumference can reach 60 cm The Weltool LOGO and decorative strips on the outside of the headlamp band have reflective properties, and have a reflective effect when illuminated by light