Equipfit Power bands are versatile, light, easily transportable and cater to a range of training purposes. Body Weight Assistance (Assited Pull Ups) /Resistance Training (Resistant Press Ups) Explosive Plyometrics Powerlifting Strength Training Speed and agility training Jumping Aerobics Stretching, Flexibility and Mobility exercises General conditioning Rehabilitation Each band is 41" long. Below are some general guidelines for band usage. Slim #2 (Red) 22mm Are best for general conditioning, rehabilitation, jumping, speed training, aerobics, and for lifters as assistance for the upper body to increase the resistance for biceps and triceps.