Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Painful for small hands (average women)

The 'ergonomic' keyboard is painful to use! My hands are on the small side of average for a woman. To make the space bar work, I either have to push down extremely hard with my thumb in a normal position, or else twist my wrist to hit more to the center of the space bar. (My thumbs naturally fall on the far ends of the spacebar, not the center.)I am going to return the keyboard, because for a small-side-of-average-woman like me, this keyboard is the opposite of ergonomic.