I have use the Speedo glove for about a year now and I love they . they provide a great upper body workout , especially if you spread you finger out . I swim six day a week , so the glove start to wear out after about three or four month . I usually purchase the blue glove , but Amazon be run a sale on the yellow , so I grab those instead . I do not know if there be a difference between they , but the yellow have last longer then the blue one have . they seem better make and in the future I will strictly purchase the yellow . as note in previous review , the size run large . in regular glove I purchase either a large or x-large - for the Speedo swim glove a medium be a perfect fit . for anyone who want a better upper body workout while swimming , these will certainly help . but you probably will be purchase 2-3 pair a year due to wear and tear on the glove - especially if you be swim in chlorine .