GDO QUICK-RELEASE SAFETY SYSTEM™ is a patented training restraint system used to keep your dog from breaking. It can be used to teach your gun dog to be steady or be used in practically any hunting scenario, keeping your dog from breaking, scaring landing birds or worse, running in front of gun fire. The system comes with a lead that can be adjust from 3' to 6' and can be used alone as a normal leash. The lead can be secured to pretty much anything and can be used on medium to large sized dogs without a collar. The quick release shackle is marine grade and comes with a 6' tether that releases your gun dog with a simple pull of the cord. The entire system is stored in a durable drawstring pouch. It comes with a one year warranty.