After wearing them for almost an hour, the back strap slides down my heels. If the case is closed, charging should cease and vice versa with charging continuing if the case is open. Runs a little big but was exactly what my daughter wanted. I?ve ordered this pair twice because they were a favorite of mine. After just about a week here, I am still very happy. Fortunately I had Extra hardware that did fit and didn?t plan on using the top shelf anyway. Super pissed I spent $36 on this. I had no issues connecting the two devices. How long do you need them to be dry? Im just going to glue them in. I purchased this as extra storage space for kitchen items.