With the full-size, lifelike manikin design of the Century BOB Body Opponent Bag, you can get motivated during a martial arts or kickboxing workout, or practice for real-life encounters. High-density urethane foam absorbs your hits and features a high-strength Plastisol skin covering. The round base fills with sand or water and rolls for easy relocation. 7 height adjustments from 60" to 78".