RTD-48 Diminished River Tube 48"When people started asking if we would make a river tube, we decided we wanted to make the best river tube possible. We knew they would need to be able handle both whitewater and hard core relaxation scenarios, and to do so, they would need two things: a comfortable design and a durable construction. We've all had enough of the vinyl tubes that pop easily and have to be thrown out or patched after a few uses. We took the same technology we use to hand