Nike Free Run 2 Men's Shoes THE LIFESTYLE SHOE THAT GOES ALL DAY. This one's got running roots. Easygoing and flexible, it uses deep grooves in the sole for a “barefoot-like” feel. Plush details around the collar and soft foam underfoot deliver comfort you have to try. The deep grooves in the sole are designed for flexibility so every step feels natural—a staple of the Free franchise. Leather and mesh combine for a lightweight and comfy feel that's durable, breathable, and easy to wear. Soft foam underfoot provides lightweight cushioning. Bootie design pairs with laces, letting you customize your fit.