My son's costume came carefully packaged. Of course he had to try it on as soon as we opened it the box. It was a great fit. I ordered a medium (7-8) for him. He's tall for an average 5 year old so I was happy that this costume was long in length in the arms & legs.
The extra pair of arms are attachable by velcro. They weren't very secure so I will stitch them because I know if they keep separating my son will go crazy. lol
There is an attachable tail as well that I will have to stitch.
If you're still on the search for boys costumes I definitely suggest this company. Your child will have no problem finding his favorite super hero or cartoon character. You'll be happy that it won't hurt your pocket as much and you won't have to deal with the crowded stores at this time.