The ping g2 fairway wood features several innovations, including a variable width sole thickness that moves weight away from the face for higher launch. the deep face increases the effective hitting area, and the progressive groove pattern (the number of grooves increases as the loft increases) enhance the spin and lift characteristics. the ping g2 fairway woods are colour-coded to help correct hooks and slices. the colour code is ping terminology for the lie angle, or the angle between the shaft and the sole of the club. golfers with an undesirable fade or slice may benefit from the green colour code (2° upright), while golfers who wish to reduce a draw or hook may benefit from the orange colour code (2° flat). the black colour code is the standard lie angle. see pings website for full information on various colour codes.