Reebok Zig Pulse Mens Shoes-Black/Yellow/Silver reduces heel stress and offers all-day comfort. Reebok ZigTech running shoe looks strange and functional. The following are the features of ZigTech: 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. 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. 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.Customers who bought this item would also interested in Reebok Zig Pulse Mens Shoes - White/Pure Silver/Neon Orange.