The elegant, featherweight Caribe is fully as fast as the twin speed, and more maneuverable. It is advertised as a "warm water" fin for one reason. The largest size available is 12-13 meaning that the largest booted foot that can fit is men's 10-10 1/2. The foot pocket of this fin is designed to approximate the shape of a human foot as opposed to a plank. That is because the moulds were made by Italians who are naturally careful and tasteful in such things. The same level of attention is evident in many of their diving products like spear guns, especially custom jobs, some of which are works of art. Generally disdained by the SCUBA diving crowd, anything which is artful is assumed to be for wimps. That is one attraction of the ugliest fin in the world, the twin jet which appears to have been designed during a vino break or after watching Jurassic Park. The Caribe is the one for you.