Reebok Vector O Baseball Bat

You don't usually think of things like drag and aerodynamics when thinking about baseball, but luckily Reebok did. They aimed to make a better, faster bat and the result was the Reebok Vector O Baseball Bat. Three holes between the handle and the head allow wind to pass through easily reducing drag and increasing swing speed. You'll never feel this kind of power and speed in any other bat.Source