I wouldn’t use them outside if you can help it, especially off of smooth concrete. I also wouldn’t use them if you already know you’re kind of rough on canes or you tend to hit things hard with them compared to others. They really are nice other than that though, despite being heavier and rattlier than the straight ones. There just aren’t allot of good options in the thin and light folding cane market unfortunately, and IMO none of them are durable, at least not the ones available in the U.S and Canada.