With White Mountain sandals, I can order my normal size of 7M and feel pretty sure theyll fit without having to return them. The directions are clear and easy to follow. Fit perfectly inside the ear charge in no time and stay charged for days! I have literally a pile of medical shoes & slip ons that I change frequently on how needs of my feet are throughout the day. The thong part on top is about 3 sizes smaller than the foot bed. the listing doesnt tell you anything! Es ist aber sehr bemerkenswert, wie gut die Technik ist die darin verbaut ist, nach heutigem Stand. go Anker! Party up mode allows you to connect, essentially, an unlimited number of speakers to a single device. I should add that I have had serious foot problems in the past and have generally required a custom made orthotic device to be placed in all of my footwear.