Rubber sole 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. Round laces add a distinct look. 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.