The heart of the kiteboard is its core, so we paid great attention to choose the right materials for the production of Jay kiteboards. We have decided to choose the lightest and overall the best available wood for cores in the snowboarding industry. The wood is one continuous piece from tip to tip without any joints, because every joint causes a breaking point, this allows the wood to maintain its natural flex properties, which are essential for excellent flex and pop of Jay boards. Our goal was to have a core with properties and advantages of wood and to keep it very light.Skull model is produced with 1D Carbon technology, we use ABS side walls construction. ABS is a high strength, very durable thermo-plastic material. CNC shaped, hand fine finished rails bond together the upper and lower layers of carbon. Together they create a torsion box which improves the stiffness of the board in torsion.Hi tech construction of Skull model combining layers of 1D carbon with CNC shaped Wood core and ABS side walls, make the board one of the lightest in the world with excellent flex, pop and overall performance. Concaved bottom is one of the main characteristics of the shape of Jay kiteboards. The board is more stable in carves, easy to switch and rides smoothly. This year we put a little bit more flex on the tips, but the board is still considered to be stiff.