The latest trend in sports such as hockey, lacrosse and baseball is called O-Technology, which Reebok adapted from tennis racket maker, Prince. The technology involves cutting holes in the shaft of a hockey stick, lacrosse stick or baseball bat, which increases the speed with which an athlete swings.
The result is a combination of decreased drag and reduced vibration throughout the swing of the stick or bat, improving the aerodynamics. An athlete can increase his overall swing speed up to 3 mph, a drastic difference in the heat of competition"
Source: NESN