| 摘要 |
A rucksack includes a bag portion, a back portion secured to the bag portion, and a reinforcing frame. The frame has an inverted U-shape including a pair of depending branch portions and a connecting portion secured to an outer face of the back portion. The rucksack also includes a linking piece formed from a pair of curved plates secured at respective lateral ends and defining an open cavity sized for allowing passage of the extending branch portions therethrough. A pair of shoulder straps extends from the upper end of the linking piece. According to the invention, the outer face of the back portion includes a first pair of coupling strips for contacting a corresponding second pair of coupling strips on the linking piece, allowing releasable attachment of the linking piece to the back portion of the rucksack and allowing simultaneous repositioning of the shoulder straps of the rucksack, depending on the morphology of a wearer's back.
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