Our Alt Range uses composite materials. That's just a fancy term for saying we use two different types of material in the fin construction that delivers, what we call Honeycomb. You'll find fiberglass at the base of the fin (the stiffness at the base helps with drive and control) and a honeycomb fabrication for the rest of the fin (giving the
fin the ability to flex above the stiff base). This is a great all-round construction option offering drive and whip at the right times.