Guy lines are strong ropes or cords used to stabilize structures like tents, flags, or sails. They are anchored to the ground or a solid object, helping to prevent tipping or swaying in the wind. Properly tensioned guy lines ensure that these structures remain upright and secure, especially in adverse weather conditions. Typically made from durable materials, guy lines come in various lengths and thicknesses to suit different applications. They are often adjustable, allowing users to modify tension as needed. Using guy lines effectively can enhance safety and stability for outdoor activities such as camping or sailing.