Unverified85% confidenceTradeoffTime unknown
防晒速干T恤的UPF值需≥40才有实际意义（UPF40+可阻挡97.5%紫外线，UPF50+阻挡98%以上），深色面料防晒优于浅色，但深色吸热更闷需搭配透气网眼设计
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Unverified防晒速干T恤要认准UPF≥40且标注UVA透过率＜5%才算有效防晒；深色、密织面料防晒优于浅色薄款，单纯浅色速干衣防晒能力有限93% similarUnverified防晒速干衬衫看UPF值，UPF40+才有实际防晒意义，UPF50+能阻隔98%以上紫外线；但真正防晒力来自织物密度和后整理，浅色薄款即使标UPF50实测也常缩水，深色或密织更可靠91% similarUnverified防晒需求选UPF≥40且标注UPF50+的款式，普通深色涤纶T恤实测UPF约15-30远不达防晒标准，浅色透光更差91% similarUnverified宣称防晒的速干T恤应认准UPF值标注：UPF≥40且UVA透过率<5%才达到国标'防紫外线产品'标准，仅标'防晒'无UPF数值的多为营销话术91% similarUnverified防晒速干裤认准UPF数值：UPF40+且标注UVA透过率<5%才算有效防晒；深色面料防晒优于浅色，但深色吸热更闷，夏季暴晒场景选UPF50+的浅色薄款兼顾防晒与散热90% similar
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