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 like more feedback in their kicks, with this fin you will enjoy solid propulsion and excellent maneuverability with minimum leg and ankle stress. • Dual-compound design results in a stiffer blade that increases propulsion and optimizes maneuverability. • Patented split fin propeller technology produces more propulsion with considerably less effort than traditional blades. • 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 pocket’s extended sole-plate allows you to maximize 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.