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You must have been see some people rely on the rotary rod and strengthly play mobile phone on the subway,And your hands have no place to put. Perhaps you can tell him to get out of the way, or maybe you just silently curse this immoral people.Whatever it is, this design can solve it, you will have the place to put hand even others recumbent leaning supporting rod .Avoid the dangerous when braking.The design from is simple but it formed a peripheral level which people can accommodate more contact area around it,To provide a focal point for those passengers standing instability, and avoid the injuries caused by instability.
Min Shen ,