100% cowhide leather ankle boot. Closure with zipper and adjustable lace-up fastening. Back pull tab for ease. Flexible insoles in 100% sheepskin. Rubber soles. LEATHER: Made with high quality leather. Any wrinkle or irregularity is a natural characteristic of the leather, which makes each piece unique. STARFIT® TECHNICAL FOAM INSOLE: Flexible technical insole made of polyurethane foam. Comfort, cushioning, and durability.