A grip for improving the mechanics of any hand function comprises a body having dorsal, ventral and two side surfaces, wherein the dorsal surface has a depression for the placement of the heel of the hand, a prominence fitting the palm of the hand, a ridge separating the thumb and forefinger of the hand, and a depression for the placement of the thumb; and wherein the ventral surface has a plurality of depressions for the four digits of the hand; and wherein the two lateral surfaces separate the dorsal from the ventral sides and optionally provide alternative depressions for the placement of the thumb.