We tied inner tubes together and put boards on top of them.
Then she saw an inner tube in one of her classrooms and a light went off.
"Just think of it as putting on an inner tube."
Riders may be in the pool with or without an inner tube.
Am very concerned about whether we'll go to war with Cuba over the little boy in the inner tube.
Another important feature is the inner tube, and its length.
The water enters from the top and down the inner tube.
The repair of inner tubes may be necessary on the road.
He used the knife to cut a long band out of the inner tube.
Guests are expected to bring their own inner tubes and lunch.