Futures Eric Arakawa EA Techflex Tri-Fin SetThe Futures EA Techflex Tri Fin Set, designed by Hawaiian shaper Eric Arakawa of Arakawa Designs, is a Medium size thruster in the Rake template category. The Techflex construction and flat foil give this fin a stable feel, making it ideal for controlling speed in more powerful waves. Over 40 years of surfboard design won't do you wrong, trust Arakawa when the waves get interesting. Fin Size Detail Height Base Area Foil Weight Side Fins 4. 57" 4. 40"