What's in an Air Max? Leather, textile and mesh combine for a durable construction that's breathable and comfortable to wear all day. Heritage Nike Air Originally designed for performance running, the Max Air unit delivers lightweight cushioning with every step. Play with Confidence Grippy rubber outsole helps you run, climb and play with ease. The foam midsole adds cushioning to your step. Rubber outsole provides traction and durability. Foam midsole adds cushioning to last. Flex grooves in the sole let your foot move naturally.