Vinyl covers twice as much high density foam as the original Wavemaster. Eight height adjustments from 47 inches to 68 inches. Base fills with sand or water and is rounded for easy roll relocation. Weighs approximately 270 lbs when filled. Bag Size: 17-1/2 inches dia. X 26 inches tall Base Diameter: 24 inches Colors: Blue, Black or Red Take your work out to the next level with the Powerline Wavemaster. Whether you practice karate, tae kwon do, kickboxing or just want to get back in to shape, this Powerline Wavemaster is for you. Wavemaster® is a registered trademark of Century, LLC. U.S. Patent #5,624,358.