【STRUCTURAL DESIGN】Different from traditional bungee jump ropes, we adopt a 4-way design. Each one is composed of four nylon elastic ropes with metal hooks, four metal length adjustment buckles, and a PE plastic seat belt separation back plate. It provides effective control and safety during various tightening operations. 【NYLON MATERIAL】The nylon rope is mainly made of polyamide resin, which has excellent wear resistance and corrosion resistance. Therefore, compared with other ropes, nylon ropes offer superior tensile strength and wear resistance, making them widely used in outdoor sports such as mountaineering, hiking, camping, etc. 【METAL HOOK AND FIXATION】Each elastic strap is equipped with four metal hooks and four length-adjustable buckles, which are more robust and reliable than plastic materials, easy to install and disassemble, and maintain adhesion under pressure. The length is adjusted to the appropriate length to secure the item in place during transportation or storage. 【FLAT DIVERSION BACK PLATE】The flat safety rope diversion back plate enhances friction, and the flat design can prevent slippage and help distribute pressure over a larger area of the cargo, thereby improving cargo safety. 【MULTIFUNCTIONAL USE】The bungee cords can not only be used to secure moving boxes and luggage racks, but also to secure other heavy items such as motorcycle helmets, backpacks, suitcases, etc.