Unverified80% confidenceFactTime unknown
背负系统的通风背板(悬空网架,如trampoline式)能显著减少背部出汗,但会使包体重心离背约3-5cm、增加晃动感;贴身背板(气流沟槽式)重心稳但更闷,重装长线建议选贴身式
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80%
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Long-term
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