Cleveland 588 Altitude irons
Sometimes golf manufacturers try to hide the super game-improvement features they design into irons. But for high-handicap golfers who really want to hit the ball higher and farther, Cleveland developed the 588 Altitude irons to do just that.
This is a classic hybrid-iron set, with each club featuring a hollow-body design that allowed Cleveland to drastically lower the center of gravity, which should make hitting the ball high much easier. (Thus, the name Altitude.) They also feature a thick topline and a shallow face.
Another helpful feature is the extremely wide sole, which should make hitting the ball fat almost impossible.
While the chassis of the 588 Altitude irons is made from 431-stainless steel (which can be soft enough to allow the clubs to be bent to adjust lie angle and loft), Cleveland designed the 588 Altitude irons with a thin, forged 17-4 stainless steel face. It's a much harder material and should transfer more of the golfer's swing energy into the shot.
The 588 Altitude irons were designed to complement Cleveland's 588 MT and 588 TT irons, so it would be easy for mid- or high-handicap players to create a blended set. For example, one might combine 588 Altitude long irons and 588 MT mid- and short irons if a player wanted to get a more feel on approach shots but maximize forgiveness with long irons.
When released, the 588 Altitude irons cost $699 with steel shafts, and $799 with graphite shafts.