I work out 5 days a week, and I use these 3-4 of those days. I've had these for 5 months, and they've held up quite well. I've even used a tricep rope for doing extensions and they've stood up quite well. I'm not sure how long they'll last, but intend to research and see. I did replace the door anchor with the Bodylastics brand, as it is much better made. I have a picture of my door anchor after 5 months use. The stitching where you put it in the door is starting to fray some. If you buy this set, read the directions. There is an ankle attachment as well. I've never used it, so I don't know how well it holds up, but I will say this; use it on your ankle only. I came across a Facebook post on a fitness page where a guy tied the ankle attachment around his squat rack and did chest flys with it. The attachment broke and hit him in the back. The directions don't mention anything about the ankle attachment, but common sense should kick in and tell you not to use it for chest flys. Anyway, if you buy these, do these things: read the directions, and inspect them before and after each use.