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: 4.24''; Depth: 4.45''; Area: 14.05''; Sweep: 35.5 degree; Foil: Inside foil technology; Optimum rider weight range: 143lbs - 176lbs; 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.