We like these cuffs. They are leather and nicely made. They are easily secure enough for our play, they can be used with or without an additional padlock. We got the red ones, and they look great on the wife!
These are OK cuffs. They are easily put on and easy to remove meaning the person that you put them onto can get out of them too easily.
I have had better cuffs but for the price I thought I would try them out. Leather was of decent quality and flexible. No one has complained about them yet.
These are a very nicely made (and nicely packaged) product. The leather is just the right mix of strong/rigid/soft. The design is clever. I like them very much.