Give yourself a boost in style and comfort wearing adidas' Energy Boost 2 ATR. Techfit ESM is made from a seamless, four-way, engineered stretch mesh for a 360 degree, sock-like fit that moves with your foot. Welded TPU bands hold the foot securely in place through the run cycle. Midfoot tongue wraps around the foot for arch support and fit. Boost heel clip for heel fit that works together with boost foam to adapt at touchdown. PU sockliner for cushioning. High performance lining wicks away sweat to keep your foot dry and comfortable. Dual TORSION SYSTEM for a smoother heelstrike-to-midfoot stance transition. Full-foot boost for cushioning and energy return. adiWEAR heel for grip and durability while maintaining light weight. Wt. 10.3 oz.