Core Wakeboards is introducing our new 137cm Pro Model to meet the demands of the pro and advanced level riders. It has increased rocker, an aerospace core with three stringers added. Pro boards include stainless steel inserts with bottoms and 30 oz. of glass on top and bottom. The tip and tail are unique in that the core is actually molded to a concave shape which houses a center fin. In addition to the center fin there are two 1 1/2 inch fins on the outer edges. The concave shape allows the center fin to sit up in the board further which stops the board from being too "tracky" but it's there when you need it. These boards are ONLY 3/8 of an inch thick and weigh 5.7 pounds.