Lifespan Fitness Resistance Loop 21mm Bands are perfect for all types of training, stretching and can be used anywhere, at anytime! BANDS ARE USED FOR Speed and Agility training Rehabilitation Aerobics Stretching Plyometrics Yoga Pilates Fitness Adding more resistance to bench press, compound lifts DIMENSION AND WEIGHT Diameter: 110cm Weight Limit: Our 21mm Resistance Band Loop offers 15kg - 30kg of resistance. WARRANTY: 12 Months Parts replacement warranty