Polytetrafluoroethylene feet

...wow, the Logitech G5 Laser Mouse looks pretty sweet..! Can't imagine ever wanting my mouse to be any heavier though? Surely the lighter the better for gaming? Anyway, most impressively it's got a feature whereby you can modify the sensitivity on the fly, so you can flick immediately from wide sweeps for enemy movement, with the press of a button, to super sensitive mode to line up the headshot...sounds awesome!