Love the sparkle look and they are perfect height. 1 is a standard size? Not at Crocs! I hate to think what the machines internals look like. Thank you for an amazing toy! They pair and unpair flawlessly. The hitch mount uses a bolt design that makes for no chatter except on the bumpiest of roads. I was able to surprise him with these and he likes them even more than I hoped! They retain well, too, and withstand vibration. The other is the size chart might be a bit off, or im fatter than I thought. However audio quality is not compromised.