They dont scuff and he grows out of them before they wear out. (Maybe the company changed the length of bolt)Took me 10 minutes to install. I also paired this set with my work laptop (HP Elitebook 840 G3) and personal laptop (Dell XPS 15) for Video conferencing (Citrix products for work and MS/Skype for personal) and they work well with that too. The earbuds charge quickly and have good range. 2021-01-14 UPDATE:Though there is much to like, about this headset. The sound quality is good, could be a little louder so Id only need 1 bud and the bass isnt great but again, I listen to stories so for voice and calls its really good. No supe elegir bien el número yo quiero 25 mexicano They fit as expected and my toddler is able to run and play without them flopping off! Now they fit a bit loose - I wouldnt buy a shoe that fits like this but its perfect for a slipper. Way too long.