Empaque perfecto. The only issue is if you do not hookup the adapter in the most ideal way. Would definitely recommend buying but not so sure about sizing because everyone says to size up when in my case, both sizes were way too huge. If you have any problems it seems like theyre very willing to work with you Very small kids bikes may not fit perfectly either. In my initial order I got a size 6. I would have given 5 stars, but certain parts came bent which was a pain to bend back. But no, apparently I must have sheepskin. I got these in a 7 and their perfect! I spent some time with co-workers comparing what I sound like using my Q20 versus my Q30, and they all told me I sound like Im "in a box" when using my Q30s.