The Nike Lunar Sweet Victory+ II is for the athlete training for endurance. This training shoe provides exceptional cushioning, multi-directional flexibility and traction on a variety of surfaces. Hyperfuse upper with internal seamless inner sleeve offers ultimate lightweight durability. Comfort collar package adds enhanced fit and feel around heel. Lunarlon midsole. Soft yet resilient foam core in Phylon is tuned for training. Exaggerated flex grooves provide full-length multi-directional flexibility and durability to enhance functional training on many surfaces. Environmentally preferred rubber pods in the heel. Wt. 7.9 oz.