Futures Lost 6.25\" Surfboard Single Fin - Grey The Evil Twin by …Lost Surfboards is a free-thinking, transformational toy for the post-modern retro surf world. A fully convertible mash-up between Twin fin flamboyance and Single fin flair. We worked with …Lost to develop the 6.25” performance “Sinister-Single” Fin specifically for their Evil Twin model. Use them in conjunction with any one of Futures’ Side-Bite options, to create the ultimate transformational fun machine… and expand your horizons beyond your wildest dreams. Note: see also …Lost twin 3.625” trailer for second set-up option Template Category | Pivot (tight turns, quick, loose) Construction | Fiberglass Size | Small Longboard Center Fin Area 23.67 Height 6.25 Base 5.43 Foil 50/50