Unverified80% confidenceTradeoffTime unknown

防水与轻量化冲突：真正防水（膜层/涂层，耐水压≥5000mm）的马甲往往更重更闷，防风马甲多数只做DWR拒水（防小雨），全防水建议直接选冲锋衣马甲

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