We employed Bison leather in the creation of these two PowerBilt bags in Brown and Black. Keeping a bold color scheme in the design, we used both bright orange stitching and a striking rust orange. Bison is a tough, durable leather made from the hide of the American bison. Forty percent stronger than cowhide, bison leather lasts for decades. It's known for its unique pebbled texture and is often used for boots, outerwear, and military gear. No two bison hides are alike. Because of the minimal tanning process, the natural variations of the leather show through.