T4A Project

Born from a global testing progamme and designed by Patrik Diethelm and John Skye and the T4A World Cup Team.
The T4A Project represents the next evolution of wave boards and wave sails.
No AI algorithms or computer shortcuts - just pure craftsmanship, high-grade materials and relentless real-world refinement by our international wave team. Tested all over the world. Approved by the best designers in water sports. 
Explore the new models built to push your riding beyond limits.

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About Us

With over 25 years of technical expertise, shaper and designer Patrik Diethelm is far more than just another name in windsurfing. From his beginnings as a shop customer to becoming a high-profile F2 designer and PWA professional, founding the PATRIK brand alongside multiple world champion Karin Jaggi in 2010 was a natural next step. Today, we design and produce premium windsurfing boards and sails, rig components, foils, fins, and some of the most advanced wings and boards in the industry.
Windsurfing is where we come from - and it’s still what drives us. Over the years, we’ve grown to love winging, surf foiling, and every other wind sport just as passionately.

Join the PATRIK family now!