The world needed a better solution to the cold and UNIQLO decided to find it by challenging common sense. After years of working with world-class textile manufacturer Toray and creating over ten thousand samples, we came up with a totally new material to combat the cold.

This solution came in the form of a cutting-edge fabric which takes body heat and stores it within air pockets deep within the fibres to keep the wearer warm. This is HEATTECH.

The connotation with heat warming or thermal wear has always been thickness. Thickness in the garment itself and thickness in terms of the excessive layering many people subject themselves to in order to keep warm. But UNIQLO turned this on its head and asked the question: Why not make it as thin as possible? This formed the basis of HEATTECH. With garments as thin as 0.55mm, you can keep the warmth closer than ever and wear it like a second skin.