冬の定番となったユニクロのヒートテック。
UNIQLOs HEATTECH has become a representative product for winter.
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Some people buy new ones every year, while others have been using the same one for several years.
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Did you know that even HEATTECH has a lifespan?
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When a reporter interviewed a representative from Uniqlo, some surprising facts about the mechanism of deterioration and the correct storage methods were revealed.
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Is HEATTECH popular with many people, but is it durable?
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In response to ENCOUNTs question, a UNIQLO representative answered, Yes, after wearing it a certain number of times, the effectiveness may become less noticeable.
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Heattech is often worn for long periods in daily life, but in reality, the more you wear it, the more its functionality decreases.
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If you have ever felt that it doesnt feel as warm as it used to, the product may have reached the end of its lifespan.
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では、なぜHEATTECHは劣化してしまうのでしょうか？
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The person in charge explained the reason as follows: The polyurethane contained in HEATTECH is generally considered to deteriorate after about three years.
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The heat-retaining function remains, but when the polyurethane—which provides stretch—deteriorates, the fabric becomes loose and it becomes harder to feel warmth.
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In other words, its not that the warmth of HEATTECH itself has weakened, but rather that as the fabric stretched and lost its fit, it became harder to feel the warmth.
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The degree of contact with the skin is a key factor.
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However, since the rate of deterioration varies depending on frequency of use and storage conditions, there is no definite replacement period.
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For example, even if you’ve only worn it for a single season, storing it in a dresser for two or three years can cause the fibers to deteriorate due to humidity and temperature changes.
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Even if you don’t use it, if the storage environment isn’t good, humidity and temperature can cause the fibers to deteriorate, the spokesperson said.
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Please be careful when storing HEATTECH in a drawer for a long period of time.
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So, when should I replace it?
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The evaluation criteria presented by Uniqlo are as follows: When the fabric loses its elasticity and no longer fits closely to the skin, it may become harder to feel warmth.
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If the fabric becomes thin, see-through, or no longer fits, take it as a sign to replace it with a new one.
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How can I make HEATTECH last longer?
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The secret to making it last is to use a laundry net and dry it in the shade. Do not use a dryer.
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The staff also advises caution when washing and storing the item. To prevent the fabric from stretching or losing its elasticity, please use a laundry net when washing.
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Also, let it air dry and avoid direct sunlight.
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乾燥機は使用不可です」洗濯ネットを使わないと他の衣類との摩擦や洗濯機の回転で生地が伸びやすくなる。
If you dont use a laundry net, the fabric is more likely to stretch due to friction with other clothes and the rotation of the washing machine.
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Furthermore, the high temperatures of the dryer may accelerate the deterioration of polyurethane.
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The same applies to everyday storage. Store in a dry place and avoid direct sunlight.
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If there is no well-ventilated area, you can use a desiccant.
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Recently, more people are buying HEATTECH at second-hand apps and recycle shops, but as mentioned earlier, the degree of deterioration depends on how each person uses and stores it.
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Even if the appearance is still good, you should be aware that used items may have reduced functionality.
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