I took my water aerobic instructor's word and ordered this shoe.  It has made such a different in my workout. I went to Dick's Sporting Goods and looked for a shoe and also looked on line.  I decided to order this and am extremely happy.  I do water aerobics 3 - 4 days a week and throw the shoe in the washer (removing the insert) once a week with some white vinegar.  GREAT SHOE!  Great support in the water and you won't believe the difference in your workout!  Yahoo!