The Callaway FT-i driver is for players who need extra forgiveness off the tee, for good shots no matter where the ball is struck on the clubface. The square design allows weight to be moved to the extremes for a maximum Moment of Inertia.
This MOI is a measure of how resistant the face is to twisting when the ball is struck off-center.
The face itself is also made to the legal limit set by the USGA.
OptiFit weighting provides a draw or neutral bias so players get the model that works best with their unique swing