the black This ergonomic mouse is an upright solution to strain and pain. Its ergonomic design places the arm and wrist at a natural 60 degree angle for effortless working. Feel better: With a lightweight design that fits all hand sizes, this wireless mouse is a real relief. Its thumb rest and rubber coating improve grip and comfort. Cordless freedom: Don’t let cables limit your working position. 10m wireless range means freedom and better posture Plug and Play: Plug the vertical mouse micro receiver into your PC or laptop and start working. The receiver is then stored in a dedicated compartment