Feature●Height: 5.14●SIDE FINSArea: 19.79●Base: 4.80●The Longo brothers had a reputation for tackling challenging aerospace parts and fabricating hydrogen fuel cells for research, but in 1996 they decided to combine their technical know-how with something they loved. Surfing.●- Height: 3.26 - Base: 3.18 - Foil: SYMMDescription Thermotech fins do not have the traditional plastic feel of a composite fin. Instead they have a consistent flex that creates drive and release through turns. Thermotech fins come with the Futures Truss Base, making them lighter and stronger.