Just like a wrist support, it cradles your mousing arm so you're not straining to hold it in position. But unlike those gel-padded mouse pads, you can tuck the Ergoroller away if you're not using it.
Plus, it's two rows of steel bearings massage your tendons and ligaments while you move your hand. That massage action promotes blood flow through the carpal tunnel and promotes proper wrist alignment.
But if you've already had a bout with carpal tunnel, the Ergoroller might be an even better idea for you. It can help break up the internal scar tissue ad restore your range of motion. If you want one, the Ergoroller costs $24.95.