High-Quality Construction: This swing strap is made from super-strong polyester for a robust and reliable connection, ensuring seams won't break. The D-rings and carabiners are crafted from high-quality steel, durable, rust, and corrosion-resistant. Easy to Use: Swing straps are incredibly easy to install – no tools needed! Simply hang them from a branch or beam, quickly adjust the hammock height for optimal comfort, open the safety device, feed the rope into the metal loop, lock it, and pull the rope end to tighten. Package Includes: You receive 4 extension cords and 4 carabiners. Each carabiner hook measures 8cm high and 6mm thick, with extension cords 25cm long. The 100% polyester boasts a maximum load capacity of 150kg. Wide Application: Our swing straps are perfect for classic tree swings, garden swings, children's swings, porch and patio swings, hanging chairs, hammocks, and more for a delightful outdoor experience. Important Tips: 1. Choose a smooth, solid support beam. 2. Hook both D-rings onto the strap as far as possible to maximize D-ring durability. 3. Ensure safety straps are secured before swinging. Your satisfaction is our top priority. We're committed to providing excellent service. If you encounter any issues after receiving your product, such as damage, incorrect quantity, etc., please contact us immediately for the best solution!