These are 3" sling silencers . They also can be used to protect the buckles on collector slings to keep them in good condition. We have tested these for many weeks. They hold up way better then our competitors in many ways from providing 3" long ones that can cover all buckles completely. To the elastic holding up better . I make these with nylon Elastic that is Solution Dyed and Berry Compliant. We try our best to produce the best products for Americans. If there is any questions please message me.