Under Armour Men's Micro G Spine Evo Shoes, Black/Graphite/Metallic Silver, 11 synthetic-and-rubber UA Spine chassis technology creates an incredibly light flexible feel without sacrificing support Micro G foam encapsulated within the chassis delivers unrivaled rebound amp; energy return Breathable mesh upper with underlying foam amp; seamless overlays for lightweight structure amp; support TPU heel counter for greater stability without being too rigid for comfort Solid rubber outsole provides full ground contact amp; superior traction without weighing you down