Aqua Tone Inflatable SUP (SUP/Stand Up Paddle Board Board) A highly versatile and stable board shape that can be used regardless of place or application. Designed with a larger size to provide stability for even the larger men. By installing stringer tape in the middle of the board, it has a 5.1-inch (13 cm) wide stringer tape in the middle of the board, it has been significantly improved compared to conventional single-chamber SUP.