Amazon.com : Goplus 12' x 6' Floating Water Pad, 3-Layer Tear-Resistant XPE Foam Mat, with Mooring Device and Hook- Loop Straps Roll-Up Floating Island for 4-6 Person on Pool Lake Ocean :
Gymax 2 Person Inflatable Towable Tubes for Boating Water Tubes for Boats to Pull - Walmart.com
2 Person Water Sport Inflatable Towable Tubes for Boating-Blue – Aiden's Corner
TowBoggan: A 6 Person Towable Water Mat
The XL Lake Monster - Inflatable Tube for Boating – South Bay Board Co.