Unverified50% confidenceFactTime unknown

背心因无袖设计，同等充绒量下比羽绒服保暖弱30-40%，核心保暖躯干但四肢暴露，零下气温需搭配外套而非单穿

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50%

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Long-term

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Related Entities

羽绒背心category

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Unverified90%白鸭绒含绒量保暖性充足，但马甲无袖，手臂及肩部裸露，严寒户外环境下单穿仍难以替代全袖羽绒服84% similar Unverified定位为叠穿/打底的基础款，约200g薄款在室外单穿保暖性不足，适合作为西装、外套内搭而非独立御寒单品。83% similar

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