Go the distance with less effort with the energy-saving power of the adidas Energy Boost 2 ESM. TechFit® ESM upper is made from a seamless, four-way stretch mesh for a 360-degree, sock-like fit that moves with your foot. 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 works together with boost foam to adapt at touchdown. High-performance lining wicks away sweat to keep your foot dry and comfortable. Dual TORSION® SYSTEM in the midfoot creates a smoother heelstrike-to-midfoot-stance transition. Full-foot boost cushioning for the ultimate in comfort and energy return. adiWEAR heel provides grip and durability while maintaining light weight. Wt. 10.3 oz.