The original Tanglefree decoy line is a solid pvc-type line, dull green in color with a tensile strength of 1500psi. It will not freeze, float, rot or flare ducks and resists tangles when used with Tanglefree decoy anchors. No knots are needed when securing Tanglefree decoy line to Tanglefree decoy anchor. The plastic decoy line snaps secure line to decoy with a snap of the fingers, or a double over hand knot pulled snug holds forever. No snarls, tangles or early morning Gordian knots. No need to wind line around decoy. Just drop in decoy bag or skiff. They won’t tangle.