I buy mine one size smaller -lrb- medium -rrb- as recommend by other reviewer . thanks for the tip ! these glove help my lap time quite a lot . I do not have big polar bear paw or large foot so I need all the help I can get , swim . they do get waterlog , of course , but they stay on and be relatively comfortable . I also use they for stand up on the bottom work out for my upper body . I really like they .