The appropriate number of pounds of this product depends on the purpose of use.

1. People and children for rehabilitation training: 5 to 6 pounds (about 2.5 to 3 kilograms).

2. Women who aim at reducing fat and shaping: 18-24 kg (about 8 to 10kg).

3. Stronger women and ordinary men: 36-40 kg (16 to 18kg).

4. Strong male: 56 to 62 pounds (25 to 28 kilograms).

5. Professional fitness athletes and fitness enthusiasts: 70 kg and above (above 32kg).