The Avanti Quattro+ diving fins have an open foot pocket. The four ribs design allows the fins to arch during the fin stroke. A new composition of the material used in the Avanti Quattro+ allows the fins to absorb energy even more easily, which is then transmitted in a better and optimized way. The special channel thrust system creates a channel geometry that can move more water and create more thrust with the same amount of effort. The result is an ultra-high performance fin designed for the most demanding divers. The newly designed foot pocket has large perforations (which prevent the so-called "parachute effect") and the joints at the junction with the blade absorb kinetic energy.