The bottom shape flows from displacement at the front into double concave into the bevel tail. This unique bottom shape, combined with a slightly longer length and narrower outline helps the water flow effortlessly along the waterline of the board. The Drifter 4 Carbon is more stable and has more glide than ever with more maneuverability to carve and jump as hard as you dare. Now in its 4th generation, the tail has a more radical bevel for clearance and maneuverability. The Drifter 4 Carbon comes in a huge range of sizes from 14 to 170 liters. Great for electric foil assist.