UMET是為了youbike所設計的安全帽系統，盡量保持原有的裝配與租借系統，以最簡單的方式達到配置安全帽的目的。UMET安全帽以柵欄式的結構設計，旋轉收起時，能有效減少1/3的置放空間。
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UMET is a helmet system designed for youbike, try to maintain the original assembly and rental system, and achieve the purpose of configuring helmets in the simplest way. The UMET helmet is designed with a fence structure. When it is rotated and stored, it can effectively reduce the storage space by 1/3.
