Test your aquatic agility with Stream Machine Swim-Thru Rings. Innovative, collapsible rings, with adjustable air chambers, allow you to change the underwater depth. You can use these rings for swimming lessons, aquatic recreation or for tournaments and aquatic games. Whether you're an avid swimmer or a budding novice, swim-through rings are challenging and fun. Inflatable chambers are decorated with turtles and fish that the whole family will enjoy in your pool. Spice up your routine by turning ordinary swimming into an engrossing sport. Stream Machine will keep you cool in the sizzling summer months at every pool party. Recommended for a child 8 years and older. Unisex.