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2025.10.30
RESEARCH

First-Ever Men's Line! More Than Just Warm, Uniqlo's 'Heattech Cashmere Blend Extra Warm' Delivers an Exquisitely Soft Feel

#Uniqlo
#UNIQLO
#Heattech
#Heattech Cashmere Blend Extra Warm
#Innerwear
#Material development
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Last year, a new collection joined 'Heattech,' Uniqlo's signature line of functional innerwear. It was the women's 'Heattech Cashmere Blend Extra Warm' from UNIQLO : C, a collection by British designer Clare Waight Keller.
This new addition boasts an exquisitely soft feel that seems to melt onto your skin, a thin, sheer texture perfect for layering, and the 'Extra Warm' functionality that delivers approximately 1.5 times the warmth of regular Heattech. Its incredible smoothness and comfort earned rave reviews, making it so popular that some items flew off the shelves almost immediately. Now, this season marks the highly anticipated launch of the men's collection.
We sat down with Masahiro Otomo, Innerwear Team Leader for the Men's MD Department at Uniqlo Co., Ltd.'s Product Division, to get the inside story on the birth of 'Heattech Cashmere Blend Extra Warm' and the behind-the-scenes of its material development.
PROFILE
Masahiro Otomo
Masahiro Otomo

Uniqlo Co., Ltd.
Product Division
Men's MD Department
Innerwear Team Leader

Over 100 Prototypes to Perfect the Cashmere Feel

The development of 'Heattech Cashmere Blend Extra Warm' all started with a simple observation from Clare: \"Heattech just feels too synthetic.\"
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