The Big Kahuna's large foam size makes it great for pools & the whole family! It's easy to bounce on water, and can be played in any water environment. The more water it absorbs, the higher & better it bounces! Works great in a pool, lake, or ocean. Available in salmon pink, lime green, & sky blue, one color will be chosen randomly for your order. Want a specific color? Call our store for accomodation while supplies last! 90 mm (3.5") diameter. Ages 6