TrueFin

Truefin is a U.S.-made swim-fin brand serving scuba divers, snorkelers, and spearfishers. Its central product, the Truefin Model 110, is designed to combine the comfortable, easy kicking of a flexible fin with the thrust associated with stiffer technical fins. The design uses modular spines that attach to the blade and help maintain an efficient angle of attack across different kicking speeds. Spines can be removed, replaced, and selected to suit different kicking styles and performance preferences.

Truefin fins are made with Monprene, polypropylene, and glass-filled nylon, and feature a low-profile, non-skid foot pocket, high side rails, and a foldable design for travel. The company says its products are manufactured and assembled in the United States and tested over one million kick cycles. Each fin includes a limited lifetime warranty, excluding heel straps, while the spines carry a lifetime guarantee against breakage. Truefin sells its fins through its online shop and provides customer support, shipping information, FAQs, and technical and engineering resources.