| 摘要 |
PURPOSE: A cap with air tunnel is provided to give a user a comfortable and refreshing feeling by having an air tunnel in the cap for external air to come into, no matter how long the user wears the cap even on a hot day. CONSTITUTION: The cap with air tunnel includes an air entrance(1) and an air exit(2) which are protruded at the outside of the hat to be used on a hot day for giving the user a comfortable and refreshing feeling; an air tunnel(4) which is connected to the air entrance(1) and the air exit(2); and an open-and-shut switch(3) on the air entrance(1) which is used for air either to come into on a hot day or to be kept from coming into on a cold or rainy day.
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