1. Ideal for physical therapy and exercise - Resistance band training can effectively burn fat and increase muscle strength. It can also help improve endurance, flexibility, and range of motion by exercising various muscle groups such as the shoulders, arms, legs, back, and abdomen. 2. 11-piece resistance band set - There are 5 resistance bands in different colors: black (30 lbs/30 lbs); blue (11.4 kg/25 lbs); red (9 kg/20 lbs); green (7 kg/15 lbs); yellow (4.5 kg/10 lbs), 2 bumper handles, 1 door anchor, 2 ankle straps, and 1 carry bag. The fitness bands are suitable for both men and women. 3. Quality - The strong latex exercise bands, nylon door anchor, handles, and ankle straps will not deform or break even under high tension. The hook and loop can be easily removed from the resistance bands for easy replacement. 4. Portable resistance bands - The resistance band set comes with a cloth bag. Its portability and versatility make it an ideal choice for workouts on the go - perfect for hotels, beaches, outdoors, and suitcases. It is equipped with hooks and safety buckles, a non - slip door anchor, a portable bag, 2 ankle straps, 1 waist belt protector, and 2 handles. The tension of the black tube is approximately 9 - 18 kg, the green tube is about 5.9 - 17.2 kg, the red tube is around 3.6 - 15.9 kg, the blue tube is about 2.3 - 13.6 kg, and the yellow tube is approximately 1.4 - 1.8 kg.