I've always had an issue with strapless bras being too big, especially at the top, so then they always pucker out. This one is very well fitted and has a strip of rubber across the top to hold it in place. I'm relatively small chested, so it works quite well...though I could see it being a bit of a hassle for someone bigger. There isn't really any support to speak of, it just gives your boobs the nice rounded look!