I bought this last summer for my kids, age 5 and 7.  We spent the summer with my mother who has a huge creek behind her house.  The kids wanted to spend most of their time in the creek, and once we got this they wanted to spend even more time in there.  We also got the paddles and they just had a blast rowing around the creek in this.  Its a decent size.  An adult would look ridiculous in it, but for kids, its perfect.  Both of mine could fit in it together sitting up, but they also liked to take turns lying down inside it.