Tumbl Trak Orbiter Rings Foam Orbiter Ring Halves with Royal Blue and Yellow Vinyl Cover with Velcro, 36-Inch Length x 36-Inch Width Add the new Orbiter Rings to your existing Tumbl Trak Air Barrel to create our Orbiter These firm foam rings create an irreplaceable piece of equipment that can be used for back handsprings, front handsprings, round offs, back tucks and much more The foam rings can also be used on their own for preschool or recreation programs and cartwheel or conditioning stations Designed for use under the supervision of a trained professional