I be take a water Fitness Class , and do Deep-Water walk . I love these glove , they create a great resistance in the water for a really good workout . I be not sure what size to buy -lrb- I be a woman -rrb- and I buy a medium . I even go to the Speedo site to look at the size chart first . either I measure my hand incorrectly , or they run a little big . I think they be Unisex , so I probably should have order a small . it be not a huge deal , but since they cost less on Amazon than they do at most Sporting Good Stores , you may even want to try they on at the store for the correct size .