Description: Mares Raptor Fins Finally Mares have taken their head out of the sand and come up with a Split fin- and what a beauty it is - although a bit heavy I am sure this will be forgotten when you zoom aead of the rest with a few small kicks. Raptor uses an advanced design and combination of materials to create the highest performance Split Fin in it's class. The Raptor's design including the Whale Tail foot pocket for maximum energy transfer- delivers the maximum thrust and efficiency in the Split Fin category.