I have smaller hands so I bought this grip for my driver.  Even though I installed this on a standard diameter driver shaft it still feels small.  I would recommend that standard size grip even for someone with smaller hands.  The grip itself is great.  Very sticky and comfortable.  It alloys you to get a solid grip without having to really squeeze down on it.  I've swung my driver with this grip both with and without a glove and either way my hands stays in their original position (no twisting or turning).  I plan on buying the standard size and re-gripping my irons.