Unverified85% confidenceTradeoffTime unknown
软箱（TPU/PVC焊接）自重仅硬箱的1/3-1/2，20L软箱空箱约1-1.5kg，同容量硬质滚塑箱可达5-8kg，长距离徒步背负优先软箱
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85%
Confidence
Long-term
Relevance
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