I had to use a separate micro USB cable to charge my shoes, the included micro USB Y-cable doesn't work for me. The shoe feels good but due to the location of the battery and a few thicker areas on the sole to protect it there is mostly no arch support I think. Fiber optics are bright and visible in full daylight. THERE IS a strobe mode, so beware epileptic buyers, I think that's pressing the 11th or 12th button. Generally satisfied but disappointed the charging cable is poor.