I am not tall but I would say my hand is a bit more than average, about 18 ish cm I would say. I always find palm grip as shown in the picture to be comfortable but the base of my palm firmly rests on the mousepad and the fingers and top part of palm will be on the mouse. Also a reason I can’t use a small mouse as the top side of my palm can never rest on the mouse without my fingers going past the keys.