Performance Core construction: Stiff, lightweight fin with a highly responsive tip flex; Drive: Mid drive rating; Pivot Mid arc rating; Hold: Very high hold rating; Base: 4.41''; Depth: 4.60''; Area: 15.12''; Sweep: 35 degree; Foil: Inside foil technology; Optimum rider weight range: 165lbs - 198lbs; Simon Anderson's signature template. Delivers an even blend of drive and pivot with exceptional hold. Ideal for performance thruster surfboards. :: Unisex > Surf Accessories Size: one size.