I decide to give these a try as the first time I see they I think , `` what a fantastic idea ! '' I order a medium and they feel more snug out of the water than in it . I swim 3 or 4 time a week for 2.5 to 3.5 hour , and these make a huge difference in not only push you through the water faster , but also they work you arm , chest , and back much more . I have get a pair of the Frisky Aqua Shoes as well , and I love both of these item .