Safe and Stable: Each swing is made of premium polyester fabric with a length of 150cm and a maximum load capacity of 550kg. It withstands extreme weather conditions. It is also equipped with extra thick 8 cm diameter D-hooks and industrial steel safety locks, you can use it with confidence. High quality: made of tear-resistant polyester, waterproof and weatherproof ; Premium stainless steel D-carabiner, strong locking system, never rust, never fade. Protective Tree Hammock FixtureThese swing hanger kits wont damage beautiful trees. We offer free thicker tree protection mats which avoid sudden breakage caused by long time friction. They are easy to attach to the tree with velcro, more secure. Easy to set upSetting up this hammock is very simple. The swing can be hung in a minute and no tools are required. Place the strap on the shaft, slide a D-ring through the ring on the other end. Firmly tighten the straps by pulling firmly downward. To shorten the strap, please place it twice on the branch. Secure the swing with the carabiner on the D-ring. Compatible with all swings: heavy-duty straps for tear resistance + stainless steel carabiner. Suitable for tree swings, air swings, garden swings, nest swings, hammocks, camping.