Red plus palm support More palm support for even greater comfort When bigger is better Red Plus Palm Support is our extended palm support that provides even more comfort for your forearms while working. Made specifically for RollerMouse Red, Red Plus Palm Support offers a longer and smoother transition from desk to RollerMouse and keyboard. Because it is larger than the regular palm support on RollerMouse Red, Red Plus Palm Support promotes an even better and more ergonomic working posture for you. Red Plus Palm Support also provides additional comfort for computer users with larger hands and longer fingers.. Make a great productivity partner even better. The tapered angle and soft inner core of the extended palm support helps improve hand posture and distributes pressure over a wider area. Red Plus Palm Support is ideal for desks with at least 12" of space in front of the monitor and mountable keyboard trays as it acts as a supportive extension off the front edge of the tray..