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This bottle is designed with two oblong grooves on opposite sides. This kind of structure will save labor when you change the barrel. Meanwhile, because there is a soft plastic in each groove, you don’t need to worry about your fingernails being hurt and it also function as anti-skidding. This bottle not only save your labor, but also make your movement more graceful.
Jianghan University
Wuhan, China
Jianghan University
Wuhan, China