These are very sturdy, which is nice. I think they will last awhile; however, be forewarned: they run very small and are shorter than they look. They keep riding up my calves every time I bend my knee, and refuse to stay in place, which is really annoying. I would recommend just buying something longer, or possibly going a size up. Also, they are not truly smoothing hosiery....the "smoothes your lumps and bumps" claim should not be taken to assume that these provide any more support than ordinary pantyhose. They are sturdier, but if you are looking to smooth unsightly 'lumps and bumps', I would recommend just spending the money on a better product (not sure how they feel about endorsing other brands here, so I'll leave it at that). Good luck! =)