Cleveland Golf Women's Black 2015 Driver Incorporating Speed Innovation technology into this family of woods makes them lighter, longer and faster than ever before CG Black - The lightest driver on the market to increase club head and ball speed for increased distance The new CG Black woods feature an advanced face thickness to reduce the carry loss on off-centre hits The Y-Shape Sound Rib allows for a pleasing sound with higher frequencies Our engineers lowered the Center of Gravity and moved it closer to the club face to launch the ball higher with lower spin