With the development of these masts, we entered the borderline area of windsurfing. The first 30 pieces were produced and tested in the second half of 2008. These masts turned out to be very reliable and durable during wave riding. They are available in lengths of 340, 370, 400 and 430cm. They are distinguished by the typical wave construction and are made of special carbon prepreg with the highest value of tensile strength. The carbon prepreg type HS enables a higher percentage of elasticity of carbon fibres. This feature is decisive for this mast type. We recommend these masts to the most experienced users, who cannot resist an adrenaline challenge also in the heavy conditions. Toni Zupančič was the first to use the mast.