1. [Safety for Your Son or Daughter] Our tree swing straps are made of industrial-grade polyester and can withstand up to 2100 pounds. Polyester is stronger and more durable than nylon and suitable for outdoor use. Sunlight, rain, snow and low temperatures will not affect our swing straps. We have conducted many tests, please feel free to use them. 2. [Easy and Quick Installation] With our tree swing hanging kit, there is no need to drill or screw. You can adjust it to the length you want. The installation is very simple and only takes a few minutes, and you can enjoy it now! 3. [Sturdy Stainless Steel Carabiner] Each carabiner is nickel-plated to enhance the rust and corrosion resistance of this tree hammock strap for long-term outdoor use. 4. [Suitable for All Types of Swings] You can use a seat or tire to form a simple swing for youth swings, adult swings, classic swings and garden swings, saucer tree swings with tree rope swings, etc. Enjoy your swing time!