[問題] 關於mm93安全帽的配戴
其實注意這個東西很久了XD
每次看到marc marquez戴上安全帽
下巴都會露出來 這樣正常嗎?
這樣的配戴方式不曉得對安全性有沒有影響
還是因為帶太低 趴車視線會看不到？
http://imgur.com/0MNjFPy
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