| 摘要 |
PROBLEM TO BE SOLVED: To provide a diet whistle by which a diet effect can be obtained easily and quickly at home, etc. SOLUTION: A hook-shaped hook A (3) is formed inside a cylindrical main body (2) formed with a breath inlet port (1) on its one side. A hook-shaped hook B (6) is formed in the center of the inside of a rubber cap (5) capable of sealing a breath outlet port (4). The hook A (3) and the hook B (6) are connected with a rubber band 7 and the cap 5 is pressed to the port 4 to form a king of a pressure valve.
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