Nike Air Max Alpha Trainer 6 Men's training shoe Softness is the enemy of stability. Especially when you're in a squat position, tackling an intense set, or trying not to collapse while trying a new exercise. The Air Max Alpha Trainer 6 gives you the best in balance and stability. With it, you benefit from "Performance Air" technology in every workout. Its wide base and sturdy heel keep your foot in place without sinking. Nothing will hold you back in achieving your goals. Phenomenal stability The foam midsole and Max Air unit in the heel cushion your foot for lasting comfort. It has been optimized for even more stability. The foam collar protects your ankle with every move you make. Wide sole The flat, wide sole with rubber traction pattern provides more stability and grip. Grip rubber The rubber sides keep your foot firmly on the sole during lateral movements. Flexibility for lunges The flexible grooves in the forefoot are designed for lunges.