Wrangler's ropes, also known as LASSOS, are a type of rope used by cowboys and ranchers to capture and control livestock. They are typically made from a long, thin rope with a loop at one end that can be thrown around the animal's neck or legs. The other end is held by the wrangler, allowing them to control the animal. LASSOS are an essential tool for wranglers, and have been used for centuries to help manage livestock.