Max out on propulsion with the Twin Jet Max. This high performance split fin delivers propeller technology with a slightly stiffer blade than what you might expect in a flexible split fin. Designed for divers who want more from their kicks, with this fin you will enjoy solid propulsion and excellent manoeuvrability in a pleasing kicking motion with minimum leg and ankle stress. Dual-compound design results in a stiffer blade that increases propulsion and manoeuvrability. Patented split fin propeller technology produces more propulsion with considerably less effort. Drag-reducing vents where foot pocket and blade meet radically decrease drag on both up and down strokes. Semi-rigid side rails improve stability through the kicking cycle. The foot pockets extended sole-plate allows you to maximise the amount of energy you expend on each kick without wasting energy. Steel spring straps never need adjusting, making it even easier to don and doff the fin.