| 摘要 |
A backpack having a storage compartment ( 134 ) and a shoulder strap assembly ( 129 a) attached at a first end to the storage compartment at a first location ( 140 ) and coupled at a second end to the storage compartment at a second location spaced from the first location. The backpack further includes a buckle ( 116 ) attached to the shoulder strap assembly and a lift strap ( 118 ) having a first end ( 120 ) attached to the upper portion ( 136 ) of the storage compartment and spanning above the shoulder strap assembly from its location of attachment to the storage compartment to engagement with the buckle. The buckle is operable to selectively adjust the length of the lift strap to vary the proportion of the weight of the backpack supported by the shoulder strap assembly when engaged by the shoulders of a user wearing the backpack.
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