We love that these fit nice and flat in our bags when we travel. Then each of us (husband, wife and two kids) has our own color. It fits sunscreen, our small emergency bandaid kid, water bottle, towels, snorkel set and sometimes little souvenirs. They also have a little zipper for a wallet or money pouch. We've used them as straight up beach bags or just as snorkel bags. Easy to clean off and much sturdier than normal draw string bags. The straps are adjustable as well.Good buy! On their 6th cruise and still going strong.