Finger paddles are a type of hand paddles used to learn proper swimming technique. There are two versions with different hole patterns. One is better suited for straps and the for rubber tubes to hold your hand in place. I have also made a design for larger hand paddles (small and medium size) which can be found here: http://www.thingiverse.com/thing:683409 Here is one example on how to use this kind of paddles: https://www.youtube.com/watch?v=E1EaFbvOZ4I Print one for each hand. Attach these to fingers and pawn using straps, rubberbands, piece of string or something else. These are a quick print. I printed these with 0.02mm layer height, 4 solid top and botton layers and 25% infill. Seems good.