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you can tie the environmental protection bag to the wrist, it is convenient and looks beautiful, when you want to use plastic bags, you can take
it from your wrist, fasten one side of it,then put your items into it ,lastly， fasten the other side of it,you can carry it by your hand or put it on your back,
it can lrelease your hands,and it seems environmental protection and cool!
Ningbo Institute of Technology