Used by NADAC for the Hoopers Class and made to their specifications featuring Arched hoops so your dog doesn't mistake them as tire jumps Older dogs can extend their agility career with a Hoopers Hoop featuring a safe no-impact obstacle to run through Young dogs can benefit from a Hoopers Hoop to teach handling skills before they are able to jump ( at least a year old) Easy to transport and set up. Perfect for any dog training purpose. Freestanding, works in any location, indoors or out. The hoops are 34' wide x 36' tall and made of sturdy UV-resistant PVC plastic pipe. Hooper Segments may vary in color from the picture.