We are sorry for the inconvenience this may have caused you. Amazon returns are super easy, so I took a chance. These help me go a little longer before the pain is bad. They charge via USB-C (cable included) or by simply sitting on a wireless charging pad, such as that you probably already use to charge your phone, and theres a status indicator on the outside of the case so you know when theyre charged. Excelente calidad y producto! I wear size 9 in womens, so the size 7 in mens fit perfectly. They were the right match and Im happy. Ich schreibe dies nur, um dem Leser anzudeuten, dass ich durchaus vergleichen kann. These are a replacement for my 20 year old Reefs and while they are great and take the fear of them breaking away, they are definitely not as robust as their predecessors, the originals had a cork inner sole and as these dont they are much more flimsy and dont seem like they will last quite as long but ok for the price, time will tell. Super easy to slip over the original case.