I've used three different brands of swim diapers and must say that, by far, my favorite is Huggies. They never sag on my child's bottom after he's been in the pool for an hour. They repel the pool water yet hold any "accidents" in. I've used another national name brand swim diaper and it simply would not stay up on my son's hips. I tried a store brand swim diaper and will NEVER buy them again. They tore on the sides and ripped around the leg. Not to mention that Huggies is always good about releasing coupons in the Sunday paper. They are very affordable and are often on sale.