| 摘要 |
<p>The covering has a closing unit (4) provided on an outer side of an inner cap (2). The closing unit is adapted for removable attachment of a closure unit (5) corresponding to an inner side of an outer cap (6). The inner cap is made of textile functional material that comprises textile natural fibers such as wool merino. The closing unit provides a push-button (7) for binding push-button elements (7') to the outer cap. The closure unit is arranged in a surrounding collar (8) inside the cap. The push-buttons are arranged at regular distances along the surrounding collar inside the cap.</p> |
