I bought two 50 foot lengths of this rope to hang a swing from a tree in my yard. I attached the rope to a strong branch about 40 feet off the ground and used a 3 foot 2x10 board as the swing seat. It was only old for about 6 months but was well weathered and not worn or broken. It appears to be very strong and has minimal stretch when stretched. I am 6ft 3" and weigh 230 pounds and my wife is 5ft 6" and weighs about 135 pounds and has no problem supporting our total weight. Swinging on a 40ft swing is also amazing because you feel like you are flying lol. The rope is a bit slippery due to the polypropylene material, but I googled a few different types of knots and had no problems with them slipping. I'm sure this rope has a million different uses and I've seen mixed reviews saying it doesn't work well for swings, but in my experience it works great.