pmt %E8%BC%95%E5%B7%A7%E9%80%8F%E6%B0%A3%E5%96%AE%E8%BB%8A%E9%A0%AD%E7%9B%94 %E5%96%AE%E8%BB%8A %E5%85%AC%E8%B7%AF %E5%B1%B1%E5%9C%B0 %E9%88%A6%E7%81%B0%E8%89%B2 ultra light all road bike helmet ODI *心率預警提示 運動時更安全

*心率預警提示 運動時更安全

*The arm strap is adjustable (about 190-310mm)

*Size: 57-61cm adjustable head circumference

*Adjustable nose pads to reduce pressure on the nose

* Can be used as a power bank

pmt %E8%BC%95%E5%B7%A7%E9%80%8F%E6%B0%A3%E5%96%AE%E8%BB%8A%E9%A0%AD%E7%9B%94 %E5%96%AE%E8%BB%8A %E5%85%AC%E8%B7%AF %E5%B1%B1%E5%9C%B0 %E9%88%A6%E7%81%B0%E8%89%B2 ultra light all road bike helmet ODI *心率預警提示 運動時更安全product description: * Polycarbonate shell polysource 205T raw material *PC+ESP material *25 air holes for ventilation and more comfortable * One piece shock absorbing and anti collision * Lightweight material with high breathability * Removable inner cloth, easy to clean * Increase nylon skeleton to improve product strength *M (56 58cm) L (58 61cm) * Weight M: 220g, L: 230g *CE safety certification