Sportsstuff Scrambler Halfpipe water towable water ski tube is fun for four!  It has dimensions of 96" in diameter. 

Model 53-2165 Sug. Retail: $449.95

Features:

• Double-Webbing Foam Handles with Knuckle Pads
• Double-Stitched Nylon Full Cover with zipper
• P.U. Fabric Coating
• Heavy-Gauge PVC Bladder
• Speed Safety Valve
• Self-Bailing Drain Vent
• Reinforced Tow Systems

Product SKU: 72-4591