Lace-up shoes, 100% cowhide leather. Adjustable lace closure. 100% sheepskin insole. 100% cowhide leather tongue. Rubber sole. LEATHER: This product is made with an exclusive material. Any possible marks or color variations are characteristics that confirm the authenticity of the leather. STARFIT® TECHNICAL INSOLE FOAM: Flexible technical insole made with polyurethane foam. Comfort, cushioning, and durability.