...that would be a dirty lie. They're just an example of the latest in Tendonitis Chic.
In my defense, I did knit myself some fingerless wrist and hand warmers a few years ago, off a pattern I created myself (I did measurements and everything! Which I never do!), but they're kind of falling apart, and I needed something to wear at work when my limbs get cold. Keeping my hands warm for typing and mouse movements goes a long way toward preventing the symptoms of tendonitis. Wrist braces at night help, too.
But anyway, a co-worker recommended these beauties from Urban Outfitters and they work like a charm. Mine are in dark green and keep me toasty all day.