We love our new Airhead Matrix V-2 Tube! We especially love the side flaps. The flaps help "steer" the tube back and forth, and make jumping over the boat wake easier. Our "tweenage" kids can lean into it and get the tube to go where they want, and I think it also helps keep them on the tube instead of falling off in a turn. We've used the tube for tweenagers and adults and everyone had fun. It's definitely roomy enough for two adults and the handles are easy to reach for one person or two. Our kids have been tubing for years and I would think this would be a great tube for people with younger kids too since the flaps make the tube less intimidating than a big flat surface.
Something not revealed in on-line information is the fact that this product holds only up to 170 lbs. I found this out when I received it and read the box it came in. Most grown men in the U.S. weigh more than that. Be aware. Otherwise it appears to be a good product.