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This bottle is designed based on a retractable
concept with dumbbell for exercises and easy
storage. The water bottle comes with a small
box at the bottom and top,you can change whatever
weights you want after that put the tenon in the
hole.When you finished exercises you can drinks
the water in the bottle,also you can used water
to change the weights,finally to use finished then
retractable concept to save the spatial,This is a
simple design with multiple functions.
Ming Chuan University
Taichung City, Taiwan