evo.com | Lib Tech Fins > Lace up your board with a reliable, eco-friendly thruster setup that will work great in a variety of conditions with the Lib Tech Tri Medium Fin Set. 3 Fins One Double Foil Trailer Fin 4.58" H x 4.44" Base Upcycled Construction Since almost every surfboard in the world is basically an oval shape cut out of rectangular material, Lib Tech is saving the unused corners of their surfboards and making fins out of them. Lightweight Hexzylon Fiberfoam Core Two Single Foil Leading Fins 4.58" H x 4.44" Base | Lib Tech Tri Medium Fin Set 2027