Rubber sole Lightweight and durable, the layered upper is made from at least 20% recycled materials by weight: the iconic chassis is crafted from some recycled plastic while nearly every part includes a percentage of reclaimed materials. Originally designed for performance running, Nike Air provides lightweight cushioning that lasts. Bringing nature to the city, the prominent arch draws inspiration from a whale's tail and adds structure while the classic fingers on the side nod to palm trees and ocean waves. Rubber outsole for added traction and durability. Rebellious '90s style gets remastered. Rugged details, including a reinforced toe and durable plastic cage, ramp up your attitude with outdoor-inspired vibes. And for added stability, it updates your Tuned Air experience with our innovative Crater Foam midsole.