The Futures x Lost Surfboards Fibreglass 6.25" "Sinister-Single" Fin is the result of a collaboration to develop a twin trailer fin specifically for Lost's Evil Twin model. Use in conjunction with any one of Futures’ Twin fin options to create the ultimate transformational fun machine … on any compatable board. 
* Also see the Futures x Lost Twin 3.625” Trailer Fin for a alternate set-up option.

• Size: Medium / 5.43" base x 6.25" height 
• Fin Type-Set Up: Trailer Fin / Single Fin 
• Colour: Smoke
• Template Category: Pivot - tight turns, quick, loose
• Fin System: Bahne / US Base. Sliding fin boxes installed on longboards, mid-lengths, SUP's, single fins and 2 +1 set-ups. Not Futures ILT (Interwoven Laminate Technology) fin box system compatible
• Construction / Technology: Fibreglass

Traditional fibreglass (FG) fins are made by laying up multiple layers of fibreglass cloth and resin and then cutting and foiling the fibreglass fin shape. FG fins are strong and can be made as stiff, or with a flex pattern as required. They provide stability for powerful surfers in all conditions.
Combined with their flex characteristics and lightweight nature, FG fins are an ideal all-round fin option.