Unverified85% confidenceFactTime unknown
充气垫内部若无隔热填充（仅空气柱结构）保暖性差，冷空气在气室内对流会带走体热，看似厚但R值可能仅1.5-2；带反射膜或纤维填充的充气垫R值可达4以上
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85%
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Unverified充气垫R值与厚度不成正比，单层充气结构R值往往不足2，隔热靠内部反射膜或填充绒；看到厚6cm但无隔热层的充气垫别指望它保暖86% similarUnverified带内置气室反射铝膜（如断热桥结构）的充气垫R值可达4-7且轻量，纯空气充气垫（无隔热层）R值仅1-2，冬季勿用无反射膜的普通充气垫85% similarUnverified带内置隔热层（如反射膜或棉绒）的充气垫R值更稳定，纯空气腔体设计遇冷会因对流散热导致实际保暖不足83% similarUnverified不要仅凭厚度判断保暖：无隔热填充的空气垫即使10cm厚，冷空气在内部对流反而比薄的带反射层/填充垫更冷，必须看R值而非厚度79% similarUnverifiedR值越高的充气垫内部隔热层越厚，往往越重且充气回数越多；追求极致轻量（<400g）的垫子通常R值不超过3，冬季保暖不足78% similar
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