Tree Swing Hanging Kit: Straps are made of commercial grade polyester. Even outdoors, these straps are built to withstand harsh winters and harsh summers. Strong safety: Our tree swing set's high-strength polyester can withstand 500 pounds (1000 pounds total). So you can rest easy knowing your swing tie will never rust. ULTIMATE TREE PROTECTION: We take it seriously to design products that won’t damage the beautiful trees on this beautiful planet. Not only that, but it’s also safer for kids of any age because it can handle larger loads. Easy to install: Throw it on a tree or beam and attach the hooks to your swing or patio furniture. Safer, Safer & Affordable: Your tree swing hanging kit comes with solid stainless steel rings, heavy-duty polyester webbing