The posts are short and the back is not tight. They are beautiful. They are difficult to get on because they are smaller than an average post; actually they are what your expect on a young girl's earring. I struggled to get them on, went to a movie where the left one feel off twice. I was lucky to find it so that I can *try* to return it despite the sticker removal. the front was too heavy for the back.
I also bought the ring which came in the wrong size with the tag cut off, and the gold ring band was THIN. I returned that already. Waiting for the necklaces. I am disappointed I won't be able to give the whole set as gifts even if the necklace works out. I can see no reason they would pass any quality control, just the pearls were pretty. A lot of good that does if they fall off and a pretty or baby puts it in their mouth.