El Naturalista Men's Ne12 Viajero Chukka Boot 100% Leather Imported Rubber sole Handmade and designed in spain Chrome free spanish leather is vegetable tanned to be gentle on the environment Anatomically designed cushioned footbed with arch support Removable insole made from recycled pu with an anatomic design. An advantage for those who need to use their own orthopaedic insoles or people whose feet sweat profusely. Rubber gives our soles flexibility and durability and they are slip resistant and biodegradable