This FCS-2 Accelerator Tri fin set is made with Neo Glass construction for a lightweight and responsive feel. The small size is great for smaller surfers and is designed to help you generate speed and drive. The Tri fin set provides the perfect balance of speed and maneuverability. With its unique design, this fin set is ideal for tight turning arcs and speed down the line. With a combination of flex and drive, this fin set will help you take your surfing to the next level.