Unverified85% confidenceTradeoffTime unknown
面料越薄越透气速干快，但抗撕裂性和防晒(UPF)会下降；户外徒步/骑行需兼顾防晒选160g以上并带UPF50+标识，纯室内健身可选更薄款
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85%
Confidence
Long-term
Relevance
-
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Unverified防晒服的UPF会随穿着拉伸、汗湿、磨损而下降：湿透状态下部分面料UPF可下降30-50%，出汗多或涉水场景应选标注'湿态防晒'或原纱型面料82% similarUnverified户外徒步、跑步等长时间日晒场景应选择UPF40+以上的速干衣，普通速干面料未必具备足够防晒能力79% similarUnverifiedUPF防护力越高通常面料越密实、透气越差；夏季高温建议UPF50+搭配冰丝/凉感�a纱兼顾防护与散热，纯厚织防晒虽UPF更高但闷汗78% similarUnverifiedUPF40+防晒适合户外运动场景，但面料偏紧身包裹，夏季高温高湿环境下透气散热表现一般，闷热感会比宽松速干裤明显78% similarUnverifiedUPF值越高通常布料越致密、透气性越差，儿童呼吸量相对体重更大且易出汗，夏季高温应选UPF50+但带网眼透气区/立体支架的款式，避免闷汗引起皮肤问题78% similar
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