Unverified82% confidenceTradeoffTime unknown
纯棉高支高密（60支以上）床单亲肤透气但缩水率较高（可达3-5%），首次下水后可能变小导致包角变松；追求尺寸稳定的选择预缩处理（Sanforized）或添加5%以内氨纶的针织棉床笠
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Unverified看成分表选纯棉需谨慎——100%纯棉卫衣缩水率通常达3-5%，首次下水后袖长可缩短1-2cm；含5-10%氨纶或涤纶的混纺款缩水率可控制在2%以内且更抗变形85% similarUnverified纯棉内衣缩水率标准为3-5%，选购时按实际身高上调5-10cm尺码；标注'已预缩水'或含少量氨纶（2-5%）的抗变形更好，但氨纶过多会降低透气性84% similarUnverified纯棉床笠首次下水会有3%-5%缩水，选购时宜比床垫尺寸略大或选择标注'已预缩水'的产品，否则洗后可能包不住床垫84% similarUnverified面料含棉量越高越亲肤透气但易起球缩水，含涤纶/氨纶比例越高越挺括抗皱不变形；日常首选棉≥60%+氨纶3-5%的混纺，兼顾舒适与保型84% similarUnverified纯棉卫衣（尤其21支以上厚磅）水洗后普遍缩水3-5%且易变形起球，追求版型持久应选棉+涤混纺（如80%棉20%涤）或加入氨纶的面料83% similar
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