Cage shoes in 100% sheep leather. Adhesive strap closure at side instep. Back pull tab for ease. Flexible insoles. Rubber soles with reinforced toes and heels. LEATHER: The material used to make each product has its own unique features. Any possible markings or color variations are signs of the authentic nature of the leather used. STARFIT® TECHNICAL INSOLE FOAM: Flexible technical insole made with polyurethane foam. Comfort, cushioning, and durability.