HIGH-QUALITY MATERIAL: Our fire escape ladder is made of high strength polyester webbing, which is strong sturdy, stable and reusable, and the load-bearing capacity can be as high as 2300 pounds SOLID STEPS: The rungs of the ladder are solid so there won't be any flexing or binding when you step on them, and the two ends of the round wood are sewn onto polyester webbing, so you don't have to worry about it spinning during use