Premium PVC Silicone Rubber Water Fin Rail designed specifically for carbon fiber blade freediving fins. High-grade flexible PVC silicone blend ensures superior durability and hydrodynamic performance. Precision-molded rail profile enhances fin stability while reducing drag. Seamless integration with carbon fiber blades for effortless propulsion. Ideal for competitive freediving, spearfishing, and recreational snorkeling. Reinforced edges prevent premature wear from saltwater exposure. Ultra-lightweight construction minimizes leg fatigue during extended use. Non-slip textured surface maintains secure foot positioning. Compatible with most premium freediving fin models. Manufactured using injection molding technology for consistent quality.