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UA Spine™ chassis technology creates an incredibly light, flexible feel without sacrificing support. Micro G® foam encapsulated within the chassis delivers unrivaled rebound and energy return. Breathable mesh upper with seamless structural support at the midfoot and forefoot. Solid rubber outsole provides full ground contact and superior traction, while carbon rubber adds durability in the heel. Full length molded 4D Foam® sockliner and collar conform to your foot's exact shape, eliminating slippage. 9.45 oz..