The only reason I got new ones was bc the tread is meant for trail running and I used them on cement which ran down the tread. My custom orthotics fit easily. That keyboard just died and I replaced it with the Logitech G513. I like them so much that I ordered an identical pair for when the first one wears out. Provided you didnt get Crocs that have vent holes, theyre also water-resistant. Hats off Cambridge Audio. Clearly these shoes arent meant for hiking. I think it should have some spacer beads though. These turn on when you take them out of the charger, and turn off when you put them back. I was excited to get them and great reviews from the description sibyl the seller I was even more ecstatic.