Features & Details Good Load-Bearing Capacity: This outdoor zip line kit is specially designed for children's exercise and play. The steel wire rope has been thickened to 0.25 inches, with a maximum weight capacity of 500 lbs, demonstrating excellent load-bearing capability. Durable materials and a stainless steel spring brake system provide a secure foundation. The zipline kit is CPC safety certified, giving parents peace of mind to safely accompany their children. Ball Bearing Design: Upgraded ball bearings with reinforced protective steel, addressing potential dangers down to the smallest details. The pulley is designed with a concave shape, polished to reduce damage to the rope, effectively supporting smooth pulley adjustments, ensuring stable and safe play. High-quality bearings deliver the best flight experience. Safety First: Setting it apart from single safety devices on the market, our backyard zipline kit utilizes both seat safety belts and rope safety harnesses, significantly reducing the risk of injuries from multiple angles. Precision stitching on the safety belts and safety ropes ensures durability and enhanced safety, providing maximum security for children's outdoor activities. Extended Spring Brake System: The 6.4 ft extra-long spring brake, made of stainless steel with moderate hardness, offers higher resilience and durability. As a result, the high-altitude zip line won't come to a sudden stop. The spring brake system effectively maintains the distance between children and trees, ensuring safety. Quick Setup: Included tools such as a wrench make the zipline easy to install and dismantle, making the process easy. The operation is straightforward, allowing parents to engage in activities with their children, encouraging their physical abilities and creating perfect parent-child moments.