Sandal model with the possibility of adjusting the size in fit and toes through a metal buckle at the ankle through a Velcro strap. Materials upper: full-grain Master calfskin dipped in color crust leather. lining: leather-colored full-grain calfskin. insole: Genuine vegetable tanned Tuscan leather Buckles: Nickel free chromed metal bottom: real vegetable tanned Tuscan leather with possibility of real rubber graft. heel: half leather half rubber H 7mm, colour/finishing: hand-polished natural leather, hand-finished light blue dipped fullgrain master calfskin