I have had this lock for only about a month and since then my bike was stolen. "These are not the Crocs youre looking for. Cons:Also the Rotating Cups - This one gets listed as a Con aswell because they rotate INWARD( as opposed to the A50s, which widened when you rotated the cups), maybe I just have a big neck, but the front edge of the cups angle down to press against the sides of my throat when these are resting on my shoulders. Anyway, these are a great replacement - no as good as the former, but they definitely hold their own. Next time I will only buy from an authorized Berk store. 5-9 and bought size 40 (9-9. I mean it when I say exposed. Having worn them for two days straight, I can confidently say that these are the best noise-cancelling headphones Ive ever owned. I purchased these due to them being JBL and generally my JBL products haven been great quality. Now of youll excuse me, Ive got to go find the rubbing alcohol and a Q-tip so I may remove a strangers earwax from my earbuds before using them.