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看密度而非只看高度：乳胶枕密度75-85kg/m³支撑偏硬适合喜欢硬枕者，60-75kg/m³软硬适中，低于60kg/m³偏软易塌陷，密度直接决定支撑力和寿命

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Unverified抱枕填充密度决定回弹与耐用，PP棉填充量45x45cm枕芯建议≥600g才够饱满，低于450g会明显偏薄塌软89% similar Unverified抱枕面料克重是耐用性关键指标：短绒/水晶绒面料克重≥230g/㎡才不易透光露棉，低于200g/㎡的薄面料填充后易起球变形83% similar Unverified抱枕填充物克重决定软硬手感：45x45cm抱枕内胆填充羽绒棉(PP棉)≥600g为饱满偏硬，400-500g为松软可塑形，＜350g会塌陷显廉价83% similar Unverified坐垫约5cm高密度海绵，长时间大重量卧推时支撑感尚可，但相比商用级8-10cm厚垫舒适度和稳定感有差距82% similar Unverified填充物PP棉克重决定软硬度，40×40cm抱枕内芯建议250-350g，克重过低（＜200g）会显得干瘪、照片起皱变形；作为靠枕用选偏软填充，作为装饰摆件可选偏硬饱满款82% similar

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