GRIM is one of World Industries most popular skateboard characters. This 2 rider 60 in. diameter (deflated) towable is big on performance. It?s tapered, thick at the front, thin at the back. This unique feature prevents submarining, provides a comfortable riding position and makes it easy to climb onto from the water. Four nylon-wrapped handles and neoprene knuckle guards provide a great grip. The durable 30-gauge virgin PVC bladder is fully encased by a double-stitched nylon cover with a reinforced internal tow harness. GRIM is equipped with a Boston valve for fast inflating and deflating.