I have develop pain in my hand , mostly my thumb from excessive keyboarding and probably some arthritis . I order this keyboard with hope of improve my condition . I wish I have read the negative review closer . while there be many feature that be good and the general feel of the keyboard be comfortable , the space bar be a deal breaker for I . my thumb be already so sore , have to press the space bar so hard make my condition even worse ! sorry , but I will be return it .