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Assure safety on the right time
Condom is the best way to prevent the diseases; however, users always need to care for the right side and the expiring dates while using it. Condom wings has 2 stripes on condom ring, stripes color green shows it is not expired when its red means already expired. Users can hold both strips easily to identify the right side for it. Easy, quick and safe. Condom wings provide a new way to save lives.
National Taiwan University of Science and Technology
National Taiwan University of
Fan-Sheng Kuo; Yi-Hsuan Chen; Meng-Ta Lee; Chi-Kao Lee.