I've figured this out, that you actually have to hook the enclosure and then put it over your head and somehow pull it down over your bust if you want it on, and then you can unhook it from behind and take it off (but you can't put it on and then hook it). Someone else said they figured a man must have designed this. I laughed because that's exactly what I said (along with some mild swearing) when I was trying to get it on. It's ridiculous. Wish I'd read the others reviews. Do not buy this bra!!