The legendary Breathe Free 2 is updated for today's player. The best of Nike tennis, this shoe provides the ultimate combination of power and speed with a breathable design that keeps you light on your feet. Utilizes LunarLite foam which is 30 percent lighter than standard Phylon and provides ultra lightweight and springy cushioning for your foot. Encased in a Phylon or Phylite midsole, this new foam compound, delivers cushioning that's soft and not too mushy. It allows impact force to be more evenly distributed and helps reduce painful pressure points on your foot. Rubber outsole with herringbone pattern provides superior traction.Nike Zoom Breathe 2K10 M ColorsWhiteGridiron Weightapprox. 13.6 oz. UpperNike's Drag On technology provides support, durability, breathability and flexibility. Performance synthetics for enhanced support. MidsoleLunarlon technology in the forefoot for a softer and more flexible ride. Nike Zoom unit in the heel for responsive cushioning. OutsoleFull length XDR in a traditional herringbone pattern for extreme durability and traction on all court surfaces. Midfoot shank for support.