Now even more realistic training for a variety of techniques. BOB's longer torso creates more striking surface area for body shot training as well as kicks. Two height adjustments, from 5 foot 6 inches to 6 feet tall. Polyethylene base fills with sand or water and is rounded for easy roll relocation. Approximately 270 lbs when filled. One year limited warranty BOB is a registered trademark of Century LLC. The BOB design is a registered trade dress of Century, LLC. BOB© 2003 Century, LLC. U.S. Patent #5,624,358