Reebok Zig Pulse Mens Shoes-Black/Silver/Red Black/Silver/Red introduces new technology to improve your workouts with the ZigTech runners.Reebok is a uniquely formed zig-zag shaped foam bottom unit designed to make the athlete more fuel efficient so they can do more with less effort- 'Go Longer'. Reebok shoes are unique shape is based on acoustic foam sound absorption technology and absorbs energy at multiple angles. The movement of each node (or 'Zig') is independent, yet connected to the nodes around it. It is designed to absorb energy on impact and reduce vibration creating a soft, quieter, more efficient ride that requires less muscle activation. At heel strike the 'zig's' both shear and compress, absorbing energy and minimizing energy-draining vibration. That energy is stored and returned to the athlete in a quiet, smooth, spring-like effect. ZigTech is up to 20% more efficient than a traditional running shoe. ZigTech reduces muscle activation so you can 'Go Longer'. Up to 13% less in gluteus maximus, 6% in your hamstrings, and 21% in your shins.People who love this item would also buy Reebok ZigPulse Men's Shoe Yellow/Black/Red Go Outside Wide Shoes-Black.o Outside Wide Shoes-Black.