gub k80 plus %E5%96%AE%E8%BB%8A %E9%A0%AD%E7%9B%94 %E5%85%AC%E8%B7%AF%E8%BB%8A %E5%B1%B1%E5%9C%B0%E8%BB%8A %E7%A3%81%E5%90%B8%E9%A2%A8%E9%8F%A1 %E9%BB%91%E8%89%B2 cycling bike helmet all road magnetic visor 加大碼 * Approximately 3-11 hours battery

* Approximately 3-11 hours battery life

*Weight: 30g

*耐磨性強

Support multi devices: speed & cadence sensors

17 Ventilation holes

gub k80 plus %E5%96%AE%E8%BB%8A %E9%A0%AD%E7%9B%94 %E5%85%AC%E8%B7%AF%E8%BB%8A %E5%B1%B1%E5%9C%B0%E8%BB%8A %E7%A3%81%E5%90%B8%E9%A2%A8%E9%8F%A1 %E9%BB%91%E8%89%B2 cycling bike helmet all road magnetic visor 加大碼 * Approximately 3-11 hours batteryWeight: 245g Material: PC shell, internal high density EPS, one piece shock absorbing impact size: adjustable 58 62cm head circumference With magnetic goggles, hood, 17 ventilation holes, sweat pad can be removed for cleaning Weight: 245g Material: PC Outer Shell, EPS Anti Shock Foam, Soft Liner inside for sweating absorb. Size: 58 62cm adjustable Magnetic Visor, 17 Ventilation holes, Removable liner for easy cleaning