Three layers of Nike React foam consist of two layers in the midsole and a sock liner. Each layer is designed to create lightweight responsive cushioning helping to keep you fresh all game long. Two Zoom units under the ball of the foot help absorb energy in every step. They return it to help give you the extra push you need to drive by defenders. Mesh utilizes reinforced layers to create support around the toe heel and midfoot. This helps deliver stability without adding weight. The circular outsole pattern provides traction for multidirectional movements. It is designed around the position of the Zoom units to get the most out of the cushioning. A plush foam tongue and padded collar with a notch to support the Achilles tendon for a snug comfortable fit. The Air Zoom BB NXT is built to help athletes feel fresh and focus on their skills not their feet. The combination of lightweight triple-stacked cushioning (a sockliner plus 2 layers of foam) and 2 Zoom units positioned in the lateral and medial forefoot provides responsiveness in multiple directions.