I just got these yesterday, so durability has not been tested. I still think the fact that the clamps are made of plastic gives a little less solid impression (the levers, which look like aluminium in the pictures, are also plastic). However, if they prove to hold up over time, I think these stands are great. The stands feel pretty lightweight, and is easy to operate. It also seems very stable. The bag zipper is flimsy, but if used with care when zipping/unzipping, I think it may hold.