This is my Mature Metal JailBird which I ordered some weeks ago. It actually turned up on Tuesday, but I had to wait 'till today to go get it from the Post Office. (Amusingly, MM put "Metal Tools" on the customs sticker.)It's great! I've got it on now and I'm pretty sure I could wear it for quite some time. I'm glad I spent the time getting the measurements correct, and for MM's guide to getting it right. It fits really snugly. I wouldn't want it any smaller. In fact, I'm thinking maybe the ring could be a tiny bit bigger. But then, I know I will stretch a little with time, so I'm prepared to wait and see. I love the high-security screw. The bit needed is really wierd. It should only be a few days before I lock that away somewhere... The lack of a dangling padlock is a bit odd, but it's nice.The metal on skin is far far superior to plastic. I can't believe how much better it is! Absolutely recommend this!Sei.