Unverified80% confidenceDecision RuleTime unknown
选择脚口罗纹含5%-8%氨纶的款式，纯棉罗纹（0%氨纶）洗3-5次后会松弛失去收口力，添加氨纶的罗纹弹力持久性显著更好
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80%
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Long-term
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Unverified机洗内搭优先选含5%-8%氨纶（弹力纤维）的面料，弹力恢复好且反复机洗后不易松垮；纯棉100%虽亲肤但机洗后领口易变形松弛84% similarUnverified含氨纶/弹力纤维(3%-5%)的罗纹背心贴合度好不掉档，但氨纶超过8%的高弹面料反复水洗后易失去弹性变松垮，纯棉+少量氨纶是耐洗与贴合的平衡点84% similarUnverified含2%-5%氨纶的面料收腰后回弹好、不勒痕，纯棉/纯麻收腰易起横褶且久坐易变形松垮；查看成分表，收腰款氨纶最好≥3%84% similarUnverified追求耐洗不变形选精梳棉+氨纶（如95%棉5%氨纶），纯棉会缩水5%左右且领口易松，含氨纶版型回弹性更好但透气略降83% similarUnverified内搭背心选氨纶含量5%-10%的莫代尔或棉+氨纶混纺，贴身不闷汗且水洗后不易变形；纯棉（氨纶0%）背心洗后领口和下摆会松垮变形83% similar
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