Minus 20°C? Uniqlo's got you covered

Just today, I learned from Genkidesu's post that Uniqlo offer different warmth levels of Heattech, its popular heat-retaining innerwear. Then I opened a LINE message from Uniqlo and saw a promotional flyer for Heattech explaining the different levels.

As today is Heattech Day in Japan, they are advertising their "amazingly thin" heattech range. The regular Heattech is for temperatures between 5°C and 20°C.  But their "Extra Warm Heattech" is helps keep you warm in temperatures as low as -5°C (to 15°C). Moreover, their "Ultra Warm Heattech" has you covered even in temperatures as low as -20°C (to 10°C).

Until today, I had always thought of Heattech as a single product rather than a range of products designed for different conditions. Whether you need a light extra layer for a cool autumn day or something capable of handling temperatures as low as -20°C, there appears to be a Heattech option to match. It's easy to see why it has become such a winter staple in Japan.