Unverified80% confidenceDecision RuleTime unknown
四向弹力短裤要看氨纶（Spandex/Elastane）含量而非仅看'弹力'宣传：含量5-8%兼顾拉伸与回弹，低于3%实际弹力有限，高于12%容易松垮变形失去支撑
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80%
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Long-term
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Unverified打底衫氨纶含量5%-8%时弹力回复性最佳，低于3%易松垮变形，高于10%贴身过紧且久穿后回弹衰减快77% similarUnverified面料含氨纶(弹性纤维)8%-15%为四向弹力最佳区间，低于5%基本不拉伸，力量动作会束缚肩背；超过18%易松弛失去回弹77% similarUnverified紧身裤压缩效果看氨纶比例，氨纶≥18%才有明显包裹支撑；15%以下只是普通弹力，久坐或深蹲会松垮下滑75% similarUnverified弹力T恤氨纶含量5%-8%时回弹与贴身平衡最佳，低于3%弹力不足易松垮，高于10%则贴身过紧且久穿后弹性衰减快72% similarUnverified弹性延展性看四面弹标注（4-way stretch）优于二面弹，压缩衣需要横向纵向都有回弹才能贴合又不阻碍动作；氨纶含量低于8%的压缩衣包裹感会松弛70% similar
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