Safe for FamilyThis set of two 158cm tree straps are made of high-density nylon and built with double reinforced stitching, totally hold up to 1000KG.The heavy-duty D-ring & 304 stainless steel carabiner with screw lock are the guard to your safety, which is rustproof and corrosion resistant. The product size is measured manually, and there will be a 2mm error due to factors such as different measurement tools and measurement methods. Trees-FriendlyThe swing straps have improved the tree protector by knitting the velcro and tree protector together, which is unique and the most durable on the market. The tree protector is to protect the tree and strengthen security also, it is very friendly to trees Easy to InstallAdjust the distance of the tree protection Velcro to the tree, and then just hang tree straps over branch or beam, loop small D-ring through large D-ring, pull tight, and attach to carabiners. Take It AnywhereEvery carry bag comes with two swing straps, two flat carabiners. You can put all the accessories into one carry bag and take it with you to multiple places, such as camping, garden, playground, etc Widely UseOur swing hangers fit all swing types, Hammock swings, patio swings, porch swings, tire swings, hanging chairs, baby carrier swings, and so on. Easy to mount, no drilling or screwing involved.