Chron to the second power. Flexible and breathable, the Nike SB Chron 2 is a sequel worthy of its predecessor. The revamped design includes a reshaped collar and heel for an improved fit—all while maintaining the comfort and performance you expect from Nike SB. Canvas upper. Reinforced eyestays. Solarsoft sockliner is soft and supportive. Mesh-lined tongue provides breathable comfort. Extended toe bumper adds durability. Foam midsole cushioning. Vulcanized construction fuses outsole to upper for flexible feel.