The symmetric cut of these fins means you don't have to worry about left and right.The symmetric cut is a full blade that offers the user maximum propulsion. These can be suited for people who have knee problems as you don't get the the twist in your kick ,Generally your kicking style is a little stiffer compared to wearing Dolphin Cut. Bodysurfers, Photographers, Dkers, Knee Boarders lean towards this style of fin. Not all fins will have the same foot pocket and sizing can differ from brand to brand. It is best to try them on and we recommend to use fin savers which keep your fins attached to your feet.