BD-UM21-DAYPACK-20

This project is about using minimal design effort to transfer the UM21 system more suitable for daily use.
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This work is about redesigning the butt pack in the UM21 system. The butt pack in the UM21 system has a perfect size for everyday use, but that pack only has a waist stripe which is not suitable for daily use. So I redesigned it with shoulder stripes, and it became a day pack.