I have a somewhat narrow foot and am true size 8. Just imagine earbirds that last nearly 4 times longer than any other pair and that alone justifies 20 or so dollars for these beauties. I was only able to have my grandson wear them for 2 weeks. You will be very happy with this purchase. First off, I have purchased Bloch products in the past and not had issues. However, this rack was one of the most difficult things to put together that Ive ever encountered - and I consider myself to be a fairly handy person. I had this happen with an older set of similar Sony headphones that Id had for years but I had gotten my use out of them, and I dont expect these things to last forever, but a month and half is unacceptable. What I did to help that was put them on an object slightly wider than my head and I heated the plastic head band part with a blow dryer on hot for several minutes, then let them cool on the object. I have not yet tried these on a run longer than 1. Noticed it while on a flight (dont fly often) because I could barely hear anything over the engine and realized one side was really quite.