HOME SAFETY: This set of two 59-inch tree straps is made of high-density nylon with reinforced double stitching to support 2200 lbs. Heavy-duty D-ring and 304 stainless steel carabiner with screw lock. Rust-proof and corrosion-resistant, it is your safety protection. Tree-friendly: The swing straps weave Velcro and tree guards to enhance the tree protection, which is unique and the most durable on the market. Designed to protect trees and add safety, the tree guard is tree-friendly! Easy to install: Adjust the distance between the tree guard velcro and the tree, then simply hang the tree strap on a branch or beam, thread the small D-ring through the large D-ring, tighten and attach to the carabiner. Take it with you: Each bag comes with two swivel straps and two flat carabiners. You can put all the accessories in one handbag and take it with you to multiple places such as camping, backyard, playground, etc. Patio swings, porch swings, tire swings, hanging chairs, baby swings and more.