Body Opponent Heavy Bags are excellent, realistic and life-like heavybags. Excellent for home, apartment, school, and aerobic boxing. Perfect every punch and kick in your arsenal. Punch to the face, chin, body ... anywhere you'd hit your opponent. Now even more realistic for a variety of techniques. Base fills with approx. 300lbs. of sand or water for solid and sturdy use. Made of high strength plastisol filled with urethane foam for durability. Adjustable height to accommodate multiple users. Base is rounded for easy roll location. Full one year warranty. You will love the realistic action and hardcore workout achieved on the Body Opponent Bag XL.