El Naturalista Women's NE24 Yggdrasil 100% Leather Imported Rubber sole Handmade in Spain by skilled craftsman with years of experience Natural leather with a rustic appearance treated with natural oils giving it excepional softness A comfort last with a slanted design that fits with the natural shape of the foot These anatomically designed insoles are removable and made of recycled materials The outsole is made of recycled rubber