Naturally and comfortably with the microsoft natural ergonomic keyboard 4000 the improved split design encourages a more natural hand wrist and forearm position and its new curved key layout makes keys easier to reach gullwing design natural arc mimics the curved placement of the fingertips to reduce key reach 14 degree gable reduces wrist pronation curved key bed designed to provide more direct key strikes for less finger effort microsofts natural split keyboard design 12 degree angle split fo