A perfect gym or cardio class style shoe with innovative technology to enhance multi-directional flexibility to give you a greater fit, more support and better traction. The shoe has been designed and built with the wearer in mind. Full length Phylon midsole - with encapsulated Air-Sole unit in the heel to give great support and comfort. Non-marking outsole - with diamond FLEX technology for enhanced traction and flexibility A great gym shoe to be used for those hard workouts. What is Nike Air, and how does it work? Nike Air was quite simply a revolution in footwear. It's extremely durable and versatile and is designed to cushion the footstrike to offer you the best possible protection and comfort. Nike Air has been going strong for over 20 years, and the materials used are continually being redesigned to give you even better comfort and performance. What is Max Air? Maximum impact cushioning. The brutal, repetitive, downward force of sport can wreak havoc on the body and on performance. Max Air cushioning is specifically engineered to handle these impacts and provide protection. Max Air is big air designed to take a pounding. What is Nike DiamondFLX? Nike DiamondFLX technology is designed to enhance multi-directional flexibility while providing a lightweight, low-profile fit. Strategically placed, diamond-shaped flex grooves offer the ideal amount of flexibility for training and enable the foot to move naturally in all directions, allowing for better balance, power and control. Developed in the Nike Sports Research Lab, Nike DiamondFLX technology strengthens the foot while providing the support and stability athletes need for lateral training moves. This process helps to strengthen your body and make workouts more efficient.