I had a breakout on my wrist after 4 days of wearing leather classic band (hundreds of tiny blisters). I wasn't sweating in it or wearing it too tight. Just chalk it up to materials of construction? Not a huge deal. Except Apple has very little concern in getting me a new band. Maybe they're not available? Poor planning if so. Sad to be early out of the gate to have the watch sit on dresser WAITING for a new band, with no estimate of when they'll even get a new band out to me. Oh, Apple wanted to charge me the difference if I didn't accept their offer to send the exact same band that caused the original irritation. Why do we pay premium prices again for these products??? Apple employees reading this, get your crap together as your burning bridges with otherwise loyal customers.