Ultra Secure Swing Hanger: We Provide The Thicker Tree Guard Mats For Free, They Will Avoid The Sudden Breakage Caused By Prolonged Friction. They Are Easy To Attach To The Tree With Hook And Loop, More Secure. 6Mm Are All Forged From Upgraded 304 Stainless Steel. Don'T Worry When Swinging With Our Hanging Kit.Durable Strap Material: The Hammock Straps Are Made Of Industrial And Durable Nylon, Water Resistant And Tear Resistant. With The Double Stitches, The Straps Are Stronger And Prevent Breakage.Suitable For All Swings: High-Strength Rip Straps + Stainless Steel Carabiner / D-Rings, The Strap Swings Is Ideal For Tree Swings, Tire Swings, Backyard Swings, And Porch/Deck, Hammock And Camping Swings.Package & Guarantee: 2 Pack Of Tree Mats (Each 79 Long And 10 Wide); 2 Screw-Lock Carabiners; 2 Long Straps (158) With D-Rings, 1 Storage Bag. We Promise 30 Days No Reason Refund Or Resend New Item.