PETZL VERTEX VENT 頭盔 A010CA 重量:490g Head circumference: 53-63 cm Material(s): ABS (acrylonitrile butadiene styrene), nylon, polycarbonate, high-strength polyester, polyethylene 認證: CCertification(s): EN 12492. 使用時請詳閱並遵循使用說明,並確實檢查器材狀態。