Cleveland Golf Men's 588 Hybrid Wood All-Around Design Tour-proven, compact profile has minimal offset for a confidence inspiring look from any lie Hottest Hybrid Face Our first hybrid engineered with variable face thickness technology creates the hottest flight on center strikes and incredibly fast ball speed on off-center hits for maximum forgiveness Glide rail Technology Combination of two rails with subtle center keel on the sole measurably decreases turf drag for more lift and speed at impact Optimal Center Of Gravity Combined with a rear sole plug, advanced wall construction allows more weight to be positioned low in the club head for a higher launch Premium Matrix OZIK Altus Shaft This shaft promotes a high launch and an all-around combination of speed and stability with solid feel at impact; Made by Matrix, one of the fastest growing shaft brands on tour