My first thought was, "Wow, these would look great with my renfaire garb." My second thought was, "Wow, these would look awesome with anything/everything I own." They're shiny and pretty and appear warm and badass. The bad news? These actual arm warmers aren't for sale. If you know how to knit though, you can get the pattern from the designer CraftyMutt. I am in love.
You can buy the pattern to make a set of your own over at Ravelry.
And actually, you can buy different but equally rad scale mail arm warmers at Etsy.