DeMarini has enlarged the "sweet spot" on its bats and use a combination of materials that let the batter utterly crush the ball. The bats have an aluminum barrel and a composite plastic handle, which allows for better flexibility near your hands while maintaining lightness, speed and stiffness up where you hit the ball. It is some serious engineering. And from what we can see, it gets some serious results -- waaaayyy longer fly balls and line drives.
If you want that magic feeling of sending one deep over the back-lot fence, the DeMarini is for you.