Details from DB:
The Standard Streamline is one of the most versatile boards on the market. With wide rounded nose and tail this board is perfect for ollies and flatland maneuvers. It's narrow waist keeps the board agile in the water so the board is still highly maneuverable. This board is our personal favorite for bank slides, box riding and over all ripping.
The Standard Streamline comes in two sizes, Medium (41.4"x19.63") and Large (43.4"x20.5"). The medium size is a better board for technical maneuvers while the large is better for bigger riders and deeper conditions.