Performance Core construction: Stiff, lightweight fin with a highly responsive tip flex; Drive: Very high drive rating; Pivot Long arc rating; Hold: Mid hold rating; Base: 4.55''; Depth: 4.52''; Area: 14.89''; Sweep: 36.6 degree; Foil: Flat; Optimum rider weight range: 143lbs - 176lbs; Set of 3 fins; Al Merrick and FCS collaboration. This is a great all round, versatile fin, which is commonly used by the Al Merrick team. Ideal for performance thruster surfboards. :: Unisex > Surf Accessories Size: one size.