Unplgged.com: It's a Diffrient World
Unplggd calls Diffrient World "an evolutionary transition from control-rich task seating to a simplified and auto-adapting mesh-lumbar support system."
Test-drive mice before you buy to ensure an ergo-friendly fit. A suitably sized mouse will support your fingers and palm and help fend off muscle fatigue and discomfort.
Ergo Gear Guide