I bought this in order to be able to do some aquatic activities without using lots of sun protection (creams and the like). It is perfect for that. I love to swim in lakes and it is great when it is a little bit colder too (though obviously, it's only a swimming suit, not a wetsuit so the protection is minimal). However, some women may find that the bust is not lined thickly enough (in fact, there is no lining). So your nipples may show.