| 摘要 |
PROBLEM TO BE SOLVED: To provide a band for strengthening the muscular power of the lower half of the body of a person who does sports, and training the hip joint.SOLUTION: This band is formed by mixing a material with a weight, such as iron powder, iron, lead powder, and lead, with synthetic resin or rubber, and combining weight, length, width, thickness, largeness and smallness. The band is used by fixing to the waist of a pair of slacks 4. |
