[KongchangAI]
Unverified80% confidenceDecision RuleTime unknown

真皮包净重通常在0.9-1.4kg,空包超过1.5kg则装满后单肩负重明显,长期单肩背易导致肩颈劳损;每日步行通勤>20分钟应优先选0.8-1.1kg的轻量款或尼龙材质

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Long-term
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