The Air Max Alpha Trainer 6 brings robustness and comfort, the best of both worlds, to your toughest training sessions. A flat, wide base prevents you from sinking so you can set and achieve your goals. The robust heel, reinforced by visible "Performance Air" cushioning, provides reliable stability when you take off deep again to do another rep. A combination of coordinated support and deliberately placed cushioning gives you a secure feeling with every step. The Max Air unit in the heel has been fine-tuned for even better stability. The flat, wide sole with an optimal rubber profile gives you stability and traction.