At Altrum, we design and build high-performance windsurf fins that deliver speed, control, and precision in all conditions. Every model is developed using advanced flow-simulation engineering (CFD), allowing us to optimize lift, drag, and rotation behavior long before the fin touches the water. The result is equipment that reacts fast, feels smooth, and gives riders the confidence to push harder.

Our freestyle fin is trusted at the very highest level — World Champion Yentel Caers won his title riding Lagoa. This proven performance defines our approach: fins must be reliable, explosive, and responsive during the most technical moves. For wave riders, our quad and single-fin options offer secure grip, early drive, and perfect stability on aggressive bottom turns and radical off-the-lip hits.

All Lagoa Fins are produced in Switzerland with strict quality standards. From material selection to final shaping, every step is handled with Swiss precision to ensure durability and consistent performance over years of use. Whether you’re training, competing, or simply enjoying time on the water, our fins provide a powerful and refined riding experience designed for progression.

Explore our range of freestyle, wave, and weed fins — engineered to elevate your windsurfing.