Alveo vent climbing helmet by petzl. One white and six red new in box one size

Featuring a strong chinstrap, the ALVEO VENT helmet is a very lightweight helmet for workers at height. It has ventilation holes to allow the ventilation to be adjusted as needed. It is built to be lightweight and its CenterFit adjustment system adjusts the headband and keeps the helmet centered on the head. The ALVEO VENT is designed for optimal attachment of a headlamp, a protective shield, and hearing protection Specifications * Head circumference: 53-63 cm * Weight: 340 g * Material(s): ABS, expanded polystyrene, nylon, polycarbonate, high-strength polyester, polyethylene. Contains Alveolen® of Sekisui Alveo AG