Our dog collars are made from the smoothest leather we source from Germany or from Nylon that meets the highest military requirements. Our double stitched leather collars consist of 2 layers of leather which are glued and stitched together for extra strength. • Nero, a deep black color • Harly, a bright brown cognac color • Ace, a deep brown color Because we work with natural products, the color may differ from the color you see here. For the dog's comfort, the D-ring is placed directly behind the buckle so that the buckle does not press on the dog's throat. Our collars are available in different length and width sizes.