Bought this for a trip to my parents? house in winter during the pandemic. Gave up on my long time purchase & use of Keen sandals; just didnt give long service, wore out to quickly! I can?t imagine it?s how they all are, or I would have read about it somewhere. How hard is it to measure?Otherwise, they are lightweight and a pretty simple. Mouse wheel and logo are very well lit. They did finally offer to RMA it after about a month of waiting, but again, did not read any questions I had as I was asking things in our back and forth (assuming its not just a bot/copy paste, which it certainly seems to be). Now for the sound quality. So, very happy with the overall battery performance. I am writing this after 15 days of use. These are less full in the toe box, but still they fit okay.