These Karrimor Hot Rock Low Hiking Shoes have a suede upper with Weatherite Extreme technology and a padded and shaped ankle collar for full protection and comfort in the outdoors. NOTE: This product is sold in U.S. sizes. While the physical product may display both the U.S. & U.K. sizes on it, please place your order using the U.S. size. Lace-up fastening. Weatherite Extreme . Padded and shaped ankle collar. Upper: synthetic . Lining: textile . Outsole: synthetic. Imported.