Endurance can be built into your shoe. Cushioning with staying power.
Adidas a3 Structure is built to last. Whether you're training in extreme heat, extreme cold, or for 3 hours a week or 13, a3 Structure is designed to provide you with a consistently smooth, supportive ride. Through the use of advanced materials and a unique geometry, each element of the entire a3 Structure midsole unit has been designed to provide optimal cushioning, guidance, and an extremely smooth heel-to-toe transition.
Alongside the a3 Structure is Adidas' a3 Energy Management System which transfers energy from the sole of the shoe to your foot which subsequently moves to your whole leg, in turn providing a boost of energy for the player. | 
