Proprietary design utilizes a micro bladder process creating a more consistent blade. The new design also has a multi-rib system which increases strength and durability. proprietary compression molding process ensures consistent high quality with every stick. Bladelight design for balance. Superior impact durability. Kevlar wrapped for micro-vibration dampening.Grip coating for enhanced control. 310 grams 50 Flex. Forsberg, Heatley