Warm innerwear has become an indispensable part of autumn and winter clothing, and UNIQLO and many other companies sell a wide variety of innerwear, but many people may not know which one to choose. In this issue, we will introduce some of the hottest warm innerwear released by various companies!
CONTENTS
Sponsored by
You should choose the best material for the sceneTips for choosing warm innerwear
The key to choosing warm innerwear is to select the best material for the scene and purpose of wear.
For everyday use, natural materials such as cotton, silk, and bamboo fiber are recommended. They feel good against the skin and keep you comfortable. On the other hand, for outdoor activities and sports, aim for those made of special polyester and other chemical fibers. They are quick-drying and absorb and dry quickly when sweating, so there is less risk of cooling the body.
If in doubt, choose a warm innerwear made of wool, a natural functional material!
Wool is said to be a functional natural material, with high moisture absorption properties that keep the body warm while allowing moisture to escape. For this reason, it is a popular choice in the warm innerwear industry as a versatile material, with the thicker ones being used in cold climates and for outdoor use, and the thinner ones being used for everyday use.
Warm innerwear for daily use
For innerwear for daily use, we recommend natural materials that feel good against the skin and are not too thick that they do not interfere with what you wear on top.
no.1 King of warm innerwearUNIQLO's HEATTECH
It is no exaggeration to say that UNIQLO’s HEATTECH is synonymous with thermal innerwear. Because it is thin and does not bulge out, there is little concern that it will ruin the silhouette when worn under any item. Another highly regarded feature is the soft feel of the fabric, made possible by the inclusion of moisturizing ingredients. UNIQLO, which offers total clothing, offers HEATTECH products not only in underwear shirts but also in tights, pants, socks, fleece, and bottoms, so be sure to check them out as well.
no.2 UNIQLO’s extra warm HEATTECH (Extra Warm)
The “Extra Warm” series has 1.5 times the heat-retaining properties of HEATTECH thanks to its raised back. Not only is it warm, but it is also moisture absorbing and moisture dissipating, making it less susceptible to dampness, which is another attractive point. The soft yarn used for the backing provides a smooth, comfortable feel against the skin.
no.3 UNIQLO’s Ultra Warm HEATTECH (Ultra Warm)
This Ultra-Warm HEATTECH is thicker and has a brighter feel than conventional HEATTECH. It is 1.5 times warmer than Ultra Warm HEATTECH, or 2.25 times warmer than regular HEATTECH. Although it is made of thicker fabric, it is also attractive in that its specifications have been devised so that the seams do not appear to be loose.
no.4 The most cost-effective warm innerwearGU's Style Heat
GU, a second brand by Fast Retailing, which includes UNIQLO, has also released warm innerwear. While being reasonably priced, they also offer enhanced functions such as moisture-absorbing and heat-absorbing functions and shape maintenance.
no.5 Transparency-resistant so you can layer it under a shirt!SEEK's Cutoff Innerwear
SEEK’s warm innerwear with cutoffs at the collar, cuffs, and hem to prevent the silhouette from being affected. The “Hot Magic” material has both heat-generating and moisture-regulating properties, and keeps you comfortable and warm while reducing the heat generated by heating and other factors. In addition to standard colors such as off-white and black, there is also a beige color that is less transparent when layered under a shirt, making it suitable for a variety of occasions.
Find GUNZE’s long-sleeved U-neck innerwear
no.6 Warm innerwear with the unique warmth of cottonGUNZE's Double Hot Series
GUNZE’s Double Hot improves comfort by considering compression around the neck and shoulders. You can feel the double-hot warmth of the moderately thick fabric and the warm tactile sensation that only cotton can provide. The finish that maximizes the unique appeal of cotton is the reason for its popularity.
Find GUNZE’s Double Hot Series
2/3GO TO NEXT PAGE
![5 innerwear that goes with the coat [ 2024/25 latest ].](https://otokomaeken.com/wp-content/uploads/2024/12/9b8bb8b9956dbbfa74ac72044f841475-630x331.jpg)
![16 luxury down jackets [ pick up a classic from a recommended brand ].](https://otokomaeken.com/wp-content/uploads/2024/12/f4205a7fc8c643dc3b86b8c5b1e653d7-630x331.png)
![Secret tools of a good traveler] Three divine items to include in your list of things to bring when traveling abroad.](https://otokomaeken.com/wp-content/uploads/2025/07/f76e884828bbf7294aac529657cb0024-115x60.jpg)
