Sprint is designed to meet the needs of freedivers and spearfishers who practice this sport in wintertime and when a fin as long as Impulse is not necessary.
The blade of Sprint, like the Impulse blade, is made of a single thermoplastic elastomer, although it would be more correct to refer to an angled sublayer and an overlay. The sublayer follows the shape and dimensions of almost the entire fin. It has a uniform thickness and a flexible longitudinal propulsion wing of variable length. In contrast, the so-called overlay covers the propulsion wing selectively and has a thickness that slopes from the maximum value to zero longitudinally towards the tip of the blade.
As a result, the fin offers a new way of storing and releasing elastic potential energy, greatly assisting the movement of the freediver.