STURDY MATERIALS:Set of Two Adjustment 6 feet tree swing straps are made of 1.3mm thicken nylon. Holds up to 2000 lbs each.The hammock tree straps are able to withstand harsh winters and brutal summers.Safe and Fun for your family.Unique 4D-Ring Design:The Camping hammock straps with 4D-Ring,you can arbitrarily tie on the Tree trunk or branch.Unique method of use to prevent the straps from coming off while swinging and 4D-Ring can double the bearing capacity.NYLON ADJUSTABLE STRAPS AND WON'T STRETCH -We have designed a very thick and sturdy tree swing strap with a 2 inch width for you!These straps are very strong and they will not stretch out. you can adjust your swing tree straps to any length from 3-6ft,meet you different request.STRONG & SAFE: Two heavy duty extra strength Carabiners which have a locking system that unable to open while the straps are in use, nearly indestructible. Absolute Safety While Swinging.A GIFT YOU NEED:These eco tree friendly straps are designed with all of the essentials included in this kit: a set of 2 extra tree swing straps,2 extra strong metal carabiners.perfect for Camping hammock,classic tree swings, garden swings, toddler swings, porch and patio swings,and even the very popular saucer swings.