| 摘要 |
The rucksack, comprising a bag (2), a back panel (3) and harness (4), has the back panel made from a thermoformed material. The panel is shaped to form projecting (3b, 3c) and recessed (3a) portions, giving a central vertical channel to provide ventilation by convection and side portions for attaching the harness shoulder straps (4a) and waist belt (5a, 5b).
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