I guess there are lots of aftermarket knockoffs of the 550 paracord. The true cord that meets mil spec should hold up well. I have had some up around
10 years holding up a wire around 130 feet long between trees for 2 of my ham radio wire antennas.Here is what is said for the true paracord. a.. ? FEATURES OF THIS MIL-SPEC PARACORD 550: 100% Nylon, EIGHT (not seven!) removable twisted inner strands, each made up of THREE (not two!) twisted inside strands. Includes a visible Manufacturer's Colored Identification Marker Strand of either GREEN or YELLOW. Preshrunk, and will not rot or mildew. Resists ultra-violet light, abrasion and tangling. Average breaking strength is in excess of 600 pounds. b..