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Imagine you are traverling on a rainy day,but as the same time,you are also thirsty.It will be a really hard thing to open the bottle cap without getting any wet. In this kind of condition,what most people could think about is to rest the umbrella on your shoulder,and twist the botttle by using finger,but you may get wet and still could not open the bottle(but you still neither can open the bottle nor stay dry).So now you can easily solve the problem by thIs new design.The wonderful design may protect you from the rain and meet the needs of water replenishment.It gets double advantage from one effort.
Wuhan University of Science and Technology