Unverified90% confidenceFactTime unknown
HEATTECH 采用改性腈纶发热纤维，通过吸收人体散发的水分转化为热量，保暖原理依赖贴身穿着，若穿在厚棉衫内侧隔层过多则效果大打折扣
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90%
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Long-term
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