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Yellow Fitness Endurance Band (5-20 lbs): Low resistance, suitable for warm-up, stretching and light strength training. Great for shoulder training and other high-performance training.
Red Fitness Endurance Band (20-30 lbs): Medium to heavy resistance, used for moderate fitness exercises and strength training. It is also suitable as a center point guard.
Black Fitness Endurance Band (30-60 lbs): High resistance, suitable for weight training, providing strong support among many advantages. Great for speed and agility training, such as push-ups, sit-ups, bench press and other exercises. “