For good surfers seeking more propulsion with less effort PRO440 are designed for high performance surfing in medium waves, Vector Carbon construction brings stronger flex / stiffness providing more propulsion from the unique S-WINGS coil effect. 4.4" trailing arm. For surfers between 70 and 90 kgs S-WINGS - RIDE DIFFERENT Always buy from the official bravosurf.com.au site to ensure you are getting the best deal!