I purchased this a few years ago. It can still be used. I wanted a little more capacity, so I replaced it with a similar type and am now selling this one. I've used it about 10 times, but I don't think there are any noticeable damages. There's a slight dullness on the metal parts, and a small spot that looks like corrosion on the clasp, but personally, I don't think they are very noticeable. It's difficult to give you the exact size... I used it to carry a bifold wallet, a small pouch, and a handkerchief. The inner diameter of the gusset is about 6.5cm. Please understand that this is a amateur measurement and may have errors. If there are any parts you would like me to measure, please let me know and I will measure them. Thank you very much ☺︎