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This project is about using minimal design effort to transfer the UM21 system more suitable for daily use.
As for the giant pack in this system, it is too heavy for hiking, but it is still suitable for traveling. But it would become a problem when checking the luggage at the airport. Since this pack has a large plastic waist belt, it becomes a weak point in transporting. So the RELEASABLE BELT KIT is designed to make the belt part releasable. This kit has three parts: the frame for securing the aluminum frames and two screws usable only by hand. So it becomes more convenient to check this huge pack at the airport.

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