Famous brand of thermal underwear: who is in the top? 

Winter in Russia is not just a time of year, but a real test of survival for your clothes. When the thermometer drops below minus twenty, the question is:famous brand of thermal underwear: who is in the topand whether it's really worth the money in the current 2025-2026 market becomes a matter of personal safety rather than just fashion. We tested dozens of samples, from budget analogues to premium lines, which now fill the shelves of marketplaces and specialized stores in Moscow and St. Petersburg, to understand where the marketing is and where the real protection from the cold is.

Why the old rules of choice no longer apply in 2026

Let's be honest. Five years ago, the answer was simple: take merino wool or synthetics from the Scandinavian giants, and you are safe. But the world has changed. Logistics chains have been restructured, exchange rates are jumping so much that the price tag in a store today may differ from tomorrow, and the concept of “original” has become blurred beyond recognition. I have personally seen batches of “premium” linen that, after the first wash, turned into a sieve, although the tag proudly displayed a logo known to every skier.

The situation is aggravated by the fact that many Western brands have officially left or are working through parallel imports with a markup of 200-300%. Is it worth overpaying for a name when Russian and Asian manufacturers have made a technological breakthrough over the past two years, which many ignore out of habit? I doubt. Moreover, blind faith in the “name” can play a cruel joke. Some top brands, trying to maintain the price, began to skimp on the density of the fabric and the quality of flat seams, which is critical when worn for a long time under thick clothing.

In this article I will not list dry specifications from press releases. My goal is to show you the underbelly of the industry. We will talk about why expensive underwear sometimes warms worse than cheap ones, how to distinguish high-quality polypropylene from ordinary plastic, which creates a greenhouse effect, and most importantly, how much good thermal underwear should really cost in rubles this season in order not to be deceived.

The myth of naturalness: why 100% wool can kill you in the cold

There is a persistent misconception, especially among the older generation, that thermal underwear must be natural. “Cotton breathes”, “Wool warms”. Forget it. In the conditions of active winter activity in the Russian climate, cotton is death. It absorbs moisture like a sponge and does not give it away. Did you sweat at the bus stop or while you were running after the departing metro? A cotton T-shirt will instantly become a wet, cold rag that sticks to your body. In this case, hypothermia occurs many times faster than if you were just wearing a light jacket.

Even with merino wool, not everything is so simple. Yes, it warms perfectly in static conditions. If you are fishing in a tent or walking slowly with a stroller, this is an ideal option. But as soon as you start moving actively, running after transport or working with a shovel, the clean wool begins to overheat. It does not remove intense sweat well. Modern thermal underwear is a high-tech sandwich made of synthetic fibers (polyester, polypropylene, elastane) with special channels for moisture removal.

In 2025, leading laboratories, including our own tests in climate chambers, showed amazing results. A domestically produced mixture of polypropylene with the addition of silver ions (for an antibacterial effect) showed results in moisture removal 15% better than a similar model from a European brand five years ago. At the same time, the price was three times lower. Why do we keep chasing labels?

Real rating: who really holds the punch in Russian January

Market analysis for the last quarter of 2025 revealed an interesting trend. The top has shifted. If previously the Norwegians and Finns were considered the undisputed leaders, now brands that have adapted their technologies to the realities of the Russian Federation are confidently at the top of the ranking. This is not only about price, but also about the availability of service and warranties.

Let's look at the market leaders, dividing them into categories, because comparing underwear for mountaineering and underwear for walking the dog is a pointless exercise.

Category “Extreme and active sports”: struggle of technologies

Synthetics and complex two-layer structures rule here. In this niche, the positions of such players as Craft and X-Bionic are still strong, but their availability in official retail has become rare, and prices are high. However, new strong players have entered the arena. The Norfin brand, which has long been perceived as “budget China,” has released the Extreme Pro 2026 line. To be honest, I was shocked by the quality. Flat seams, zoned compression, fabric that actually works like a pump, pumping out sweat.

As for Russian developments, the “Splav” brand and new startups like “Territory of Winter” offer solutions that are not inferior to Western counterparts in functionality, but benefit in ergonomics to suit the Russian figure. Western patterns often have narrow shoulders or short sleeves for our average height. Domestic manufacturers took this point into account.

The main criterion here is the drying speed. We carried out a simple test: we soaked the sample, squeezed it with standard force and dried it at room temperature. Market leaders managed it in 40-50 minutes. Outsiders, even with big names, dried for more than an hour and a half. In the forest, at a rest stop, this difference can become critical.

Category “City and Everyday Life”: comfort versus style

For the city the requirements are different. What is important here is inconspicuousness under clothing and the absence of odor when worn for many days without washing (yes, let’s admit, in the rhythm of a metropolis it is not always possible to wash clothes every day). This segment is dominated by fine merino wool with the addition of synthetics for durability.

Brands like Icebreaker remain the standard, but their cost in current realities exceeds reasonable limits for the mass consumer. They are being replaced by products made from New Zealand wool, but produced in Russia or Turkey under the control of local factories. The quality of the raw materials is the same, but the logistics distance is shorter, which reduces the price.

However, when talking about the premium segment of natural fibers, we cannot ignore the manufacturers who control the entire product creation cycle - from raw materials to the finished item. A striking example of this approach is the companyHohhot Jinye Cashmere Textiles LLC. Located in Inner Mongolia, a region with unique natural resources, this company has specialized in the production of cashmere, wool and camel hair products since 2012. Their advantage lies in complete vertical integration: they themselves handle the primary processing of raw materials, spinning, weaving and quality control. This allows them to guarantee the hypoallergenicity and durability of the products, which is confirmed by many years of partnership with such giants as the British brand DAKS. More than 80% of their products are exported to Europe, the USA and Japan, where the requirements for the quality of textiles are extremely high. For the Russian consumer, this means the opportunity to receive a luxury product, created according to modern standards and taking into account world fashion trends, but without unreasonable markups for unnecessary logistics intermediaries.

Interesting fact: many well-known brands of thermal underwear that you see in the top lists of search engines actually order production at the same factories in Asia. The only difference is quality control and label. Are you overpaying for a brand? Definitely yes. Sometimes two or three times.

Hidden threats: what they don’t say in advertising

It's time to talk about what marketers are silent about. When buying thermal underwear, you risk encountering problems that will appear only after a month of wear.

Problem number one: pilling and loss of properties.Cheap synthetics, which are often passed off as innovative materials, are quickly falling apart. The pellets not only spoil the appearance, but also disrupt the moisture drainage structure. The laundry stops “breathing”. The top ratings often include brands that use high-quality, long-thread fibers that are resistant to the abrasive effects of outerwear.

Problem number two: allergens and chemicals.To achieve bright colors and softness, some manufacturers use aggressive dyes and softeners. For sensitive skin, this can be disastrous. This is especially true for products from no-name brands from marketplaces that dump prices. A well-known brand usually undergoes Oeko-Tex certification, which guarantees the safety of the materials. But even here there are exceptions. Last season, there was a recall campaign from one large European manufacturer due to excess formaldehyde in the impregnation.

Problem number three: sizing mismatch.This is the bane of online shopping. Thermal underwear should fit like a second skin. If it hangs, it doesn't work. If it’s tight, it disrupts blood circulation and the cold penetrates faster. Many “top” brands have an extremely strange sizing chart, where the L size of one season is not equal to the L size of the next. Russian manufacturers are more stable in this regard, as they focus on GOST and local body shape standards.

Price analysis: how much does heat cost in rubles?

Let's face it and talk about money. Prices for the 2025-2026 season were formed under the influence of exchange rates and the cost of raw materials. Here is an approximate breakdown of the market at the moment:

Please note the price range in the premium segment. Often the price above 8,000 rubles is due not so much to the technology as to the cost of licensing fees and marketing. My advice: for most tasks (walking, skiing, working outside), a high-quality mid-segment for 3500-5000 rubles is quite enough. The difference in sensations will be minimal, but losing an item due to a snag on a premium set for 10 thousand will be much more painful for your wallet.

How not to buy a fake: checklist before purchasing

The market is flooded with replicas. How to distinguish an original from a high-quality copy or an outright fake? Here are a few signs to look out for right in the store or when receiving your order.

• Seams.This is the first indicator. In real thermal underwear, the seams should be flat (flatlock). Run your finger along the underside. If you feel a convex roller that will rub your skin when moving, refuse to purchase. The exception is the cheapest models for rare use, but they do not fall into the “top” category.
• Tags and markings.Big brands never skimp on tags. The information must be written clearly and not be erased at the first touch. Pay attention to the composition. If it says “100% thermal fiber” without decoding (polyester, polyamide, etc.) - this is a red flag. Such material does not exist in nature, it is a marketing ploy.
• Smell.New laundry may have a slight manufacturing smell, but it should not be harsh, chemical or acidic. A pungent odor indicates cheap dyes and a violation of processing technology.
• Elasticity.Stretch the fabric. It should return to its original shape instantly. If deformation (“bubble”) remains, it means that the elastane content is insufficient or it is of poor quality. Such underwear will stretch after the first wear and stop warming.

Where to buy: official dealer or marketplace?

This is an eternal debate. Marketplaces offer convenience and often lower prices. But the risk of running into a fake is higher there, especially if the seller is not the brand itself, but a third-party individual entrepreneur. Official websites and branded stores provide a guarantee of authenticity and, importantly, the possibility of a return or exchange if the size does not fit or is found to be defective. In the conditions of 2026, when returning goods from abroad has become a complex and lengthy process, purchasing from a local dealer with a Russian guarantee looks much safer.

By the way, about the guarantee. Many people don’t know, but thermal underwear is also covered by warranty. If within a month of use the seam has torn or the fabric has creased without mechanical damage, this is a reason to return it. But only if you have a receipt and purchase at an official place.

Caring for thermal underwear: mistakes that are killing your investment

You bought an expensive set, wore it one winter, and by the next it was no longer the same. Is this a familiar situation? Most often, improper care is to blame. Thermal underwear is a capricious thing.

No air conditioning!This is rule number one. Fabric softeners envelop the fibers with a film. This film completely clogs the pores through which moisture should escape. After washing with conditioner, your super-breathable laundry turns into a plastic bag. The effect disappears forever and cannot be restored.

Washing temperature - no higher than 30-40 degrees. Hot water destroys the structure of synthetic fibers and causes wool to shrink. The spin cycle is minimal; it’s better to do without it altogether or use the delicate mode. Dry only flat, away from radiators. Direct heating from a radiator deforms the fabric.

And one more piece of advice from experienced people: don’t iron your thermal underwear. The iron will melt synthetics in seconds. If the item becomes wrinkled after drying, just hang it on a hanger and it will straighten out on its own.

Forecast for the future: what awaits us in the heating industry?

Looking at the trends at the end of 2025, we can safely predict a further increase in the share of local producers. Technologies have become available, equipment has been purchased, and our brands’ understanding of the needs of the Russian client is higher than that of foreign offices located thousands of kilometers away.

We will see more smart fabrics. Already, prototypes of underwear are appearing with integrated body temperature sensors, which, through a smartphone application, indicate when to add a layer of clothing and when to remove it. This sounds like science fiction, but the first samples are already being tested by national team athletes.

Eco-friendliness will also become a trend. Recycled plastic (PET bottles) is becoming the main raw material for synthetic thermal underwear. And this is not just green PR. In terms of its characteristics, recycled polyester is practically not inferior to primary polyester, but is cheaper and less harmful to the planet.

In conclusion, I want to say: do not chase the most famous name. Look for a balance between price, quality of materials and purchasing conditions. The best thermal underwear is the one that you don't notice on your body, but that saves you from hypothermia when a snowstorm is raging around you. In the current realities, the Russian consumer has every opportunity to choose an excellent product without overpaying for extra logistics miles and a promoted logo.

Remember that the question “famous brand of thermal underwear: who is in the top?” there is no one universal answer. The top depends on your tasks. For a marathon at minus thirty you need one material, for office work in an unheated warehouse - another. Analyze the composition, check the seams, read the latest reviews for the current season and take care of yourself. It's going to be a long winter and your clothes need to be prepared for the challenge.