1. Safety: To hang the swing without damaging the tree. To prevent the shoulder straps from coming loose when swinging, we have equipped the carabiner with a high-performance nut. Each strap has extra stitching on the metal arc fabric loops to ensure a stable and secure connection without tearing the seams. Prevent the shoulder straps from getting caught in the swing. 2. High-quality materials: Strap material: Polyester fabric, D-ring and D-hook Material: High-quality stainless steel, Size: 150*5*0.3cm Product set: belt 2 + storage bag 1 + strong D-ring 2 + durable fabric 3. Tree protection: These swing suspension kits will not damage the beautiful trees. They are equipped with a tree protection net so that the shoulder straps and the tree will not be rubbed and damaged when shaking. 4. Superior performance: The product is made of nylon rope, with high waterproof index, wear-resistant and durable, exquisite workmanship, accurate positioning, maximum load: 0-550kg. 5. EASY TO USE: Swing suspension kit suitable for all types of swings. Use it to hang all types of swings, patio swings, balcony swings, hanging chairs, baby swings, balcony swings and more. Both straps can be installed in less than 5 minutes. No drilling or tools required. The straps also work with all sizes and fit hammock.