Our hands were not designed to be flat on tables for 8 hours a day, yet that is how mice were designed in the past. The Lenovo Go Wireless Vertical Mouse goes beyond the norm and delivers an experience that replicates the natural form of a handshake with a 45? palm grip and revised finger positioning for optimal posture and productivity. Key Details True Ergonomic vertical design Comfort grip with UV-coated cork material 6 button mouse, 3 programmable side buttons Easy to wipe and clean, resistant to common liquids and gels