This one's got running roots. Easygoing and flexible, it uses deep grooves in the sole to create a “barefoot-like” feel. Plush details around the collar and soft foam underfoot help deliver comfort you just have to try. Benefits Deep grooves in the sole are designed for flexibility, so every step feels natural—a staple of the Free franchise. Synthetic 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.