The suspension sling is made of durable polyester for strength and abrasion resistance to be used. The sling is wide enough to support most people’s upper arms, so it’s also a more comfortable option for larger people. The webbing has a tensile strength of 1500 LB, so you don’t worry too much about whether it can support your weight. The 12mm diameter alloy buckle is used to attach the load-bearing for durability.