The Verdict: The tendency for thin-face irons to sound clacky or tinny is a challenge for designers. Fillers behind the face or in the cavity damp sound but can come at the expense of ball speed. Callaway uses a urethane compound impregnated with millions of microscopic spheres of air. The material is positioned in the lower half of the iron where impacts occur, providing the necessary cushy feel but still allowing the face to flex.
Loft: 7-iron: 30 degrees; PW: 44 degrees
Street Price: $900