If you mean the braces around his wrists, they're to help make typing more comfortable and prevent Repetitive Strain Injury. He says they probably aren't made anymore, but they were sold by Medi-Active and there were two varieties - with and without the thumb brace. He uses the ones without the thumb brace. They might be available on ebay or something, if you're really interested.
I can't recall seeing any other gloves, so I'm assuming that's what you're talking about.