High QualityThis swing attachment is made of super strong polyester for a strong and reliable connection without tearing at the seams. The D-ring and carabiner are made of high-quality steel, durable, rust-resistant and corrosion-resistant. Easy to useThe swing straps are very easy to install, no other tools are needed, just hang them on a branch or beam, quickly adjust the height of the hammock to find the most comfortable hanging position, then open the safety device, pass the rope through the metal buckle, lock it, and pull the end of the rope to tighten it. Package IncludedYou will receive 4 extension cables and 4 carabiners, each carabiner hook has a size of 8 cm, a thickness of 6 mm, and an extension cable length of 25 cm. The 100% polyester has a higher maximum load capacity of 150 kg. Wide applicationOur swing slings are perfect for classic tree swings, garden swings, toddler swings, porch and patio swings, hanging chairs, hammocks and more for an enjoyable outdoor experience. 1. Try to choose a smooth and strong arm frame. 2. Hook the two D-rings to the strap as much as possible to increase the durability of the D-rings. 3. Make sure the seat belts are on before swinging.