Sizing: Large shape. If you are a half size, please order down. For more details see the Size Guide. Upper: Ecological microfiber, a water resistant material. The zipper and eyelets are metallic and free of nickel. Lining: Breathable and anti-allergic microfiber, CO2 free manufacturing system. Insole: Paperboard agglomerate, microfiber linned. Footbed not removable. Outsole: Rubber,3 cm/1.2 in. Made in Portugal.