Here's a quick peek at how we make polyester round slings! Our team loads the polyester load yarn onto spools and threads it through the polyester round sling jacket. The load yarn is pulled through continuously to create multiple loops. The more wraps there are, the stronger the sling is. We pay great attention to detail when crafting our poly round slings. Each type of sling has a precise number of load yarns, which are counted twice — both manually and digitally — to guarantee the capacity wi