So, I can say that the company is responsive and stands behind the product. Airpod Pro buds will fit. They make GREAT house slippers and if you have to go out anywhere you can just wear them if you want to. I just never throw away the good shoe and eventually end up with good "pairs. I dont have children, so I dont care about this feature. They stay on because I can adjust them so I feel safe in that I won’t trip from a larger size falling off. Not a terrible range, but can be frustrating as sometimes if you are 10-15ft away you can only hear if you turn your head in the proper direction. I havent found that to be the case however since the relaxed fit is wider than the roomy. Man oh man did I sweat! Perfect shoe for my sons wedding.