DOUBLE DOG 2 Person Inflatable Towable We double dog dare you to climb on, hang on and have some serious fun! DOUBLE DOG is built to last; the 30-gauge PVC bladder is completely covered in double-stitched 840-denier nylon, with no exposed vinyl. It has 2 deluxe handles with neoprene knuckle guards and seat pads. The Speed Safety Valve is easily accessible, for quick inflating and deflating. Size: 79" long x 44" wide (deflated).