Got this because I used to love my old Intellimouse but alas it died. It had a great shape and fit my hand like a glove. This one feels half the size. If I center it in my palm my fingertips are an inch off the front of the mouse making it impossible to use. If I put my fingers on the buttons my hand is not touching the mouse at all, creating a cramp in my hand that is unbearable. I am going to donate it to an elementary school.....