I see either the leather with snaps that's flexible or metal ones shaped like a "C". I want a leather covered metal one that is bendable around the wrist. Got one at a bead store in CA once and want more.
here's an Etsy seller. i believe this is what was under your cuff from years ago. you could also probably cover aluminum, cut some yourself, bend http://www.etsy.com/transaction/57983004