Unverified80% confidenceTradeoffTime unknown
背板透气性与硬挺护脊支撑存在矛盾：全硬质高护脊背板往往贴背不透气易出汗，而网眼悬浮透气背板的支撑刚性偏弱；南方湿热地区可优先透气+中等支撑，脊柱负重需求高则优先硬挺护脊
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80%
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Long-term
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