Opananken Men's Super Care Belluno Sheep Leather Loafer Sheep Leather Removable insole, which allows using customized insoles. Sheep leather upper. Leather thickness rigorous controlled between 0.9 to 1.1 mm. High-quality naturally tanned leather lining, providing maximum softness. No pigments, improving the sweat absorption and avoiding bad scents. Leather thickness rigorous controlled between 0.9 to 1.1 mm. The cattle leather lined polyurethane insole has a permanent memory, which never deforms. They are anatomical and fill in all the arch of the foot, increasing the impact absorption. Sheep Leather is unbeatably smooth due to its supple texture which makes it excellent for medical shoes. It features excellent insulating properties and resistance against static electricity.Removable Insole