| 摘要 |
<p>A protective bag or case for a tennis racket includes a layer of insulating material which produces a thermal barrier. In this way, the accurate tension of the racket strings can be maintained, and the racket frame itself is protected from being wrapped. The racket case has a separate chamber for the storage of tennis balls and they too benefit if that space is temp.-controlled through the use of thermal insulating material. A bag can give the same ball protection if a ball pocket made from insulating material is provided.</p> |
