I be not a great swimmer but I be not bad either . I be do my daily lap and wish I could have just a little something to put more challenge into my lap . these glove be just the thing . I actually could not do my usual 25 lap . I be lucky to get 15 the first day . they really do increase the upper body strength for every muscle group . they even give you hand a work out since you have to pull so much more water with each stroke . I would tell anyone that want great look tone arm and sholder to get a pair of these and go swimming .