Children’s functional underwear test & comparison »top 6 in january 2020

The 6 best functional underwear for children at a glance.

Have you ever gone jogging in a synthetic top in midsummer? Then you surely know this uncomfortable feeling of the substance sticking to the skin. Especially if you do sports frequently or e.g. For example, if you sweat a lot at work, functional underwear can make your life easier.

If you only take the comparison test once, you will notice a big difference! There are a few things to consider when buying functional underwear. For example, fabrics made from natural fibers provide optimal protection against odors, while other fabrics have a cooling function. Are you curious? Then find out more in our functional underwear comparison.

The quality management for our test and comparison procedure is TÜV-certified according to ISO 9001

Children’s functional underwear comparison
Illustration * Compare winner
Price-performance winner
Model * Prosske Dry Dynamic children’s functional underwear set McKinley Yahto / Yaal underwear set Spaio set unisex kids functional underwear CMP 3Y04260 thermal underwear longsleeve shirt Freenord Norde Thermotech Set Odlo BL Top Crew Neck Active Warm Kids Boys
at Amazon *
2 reviews 4 reviews 2 reviews 34 reviews 73 reviews 22 reviews
sizes 114-156 98-176 116-158 104-176 110-158 80-176
Material Here you can choose between natural and synthetic fibers. Due to their short drying time, synthetic fibers such as polyester or polyamide are suitable for summer. Natural fibers such as merino wool are very odorless, but because of their longer drying time they are more suitable for quiet sports. Elastane provides the necessary amount of stretch. Polyamide, polypropylene, elastane polyester Polyamide, elastane polyester Polyamide, elastane polyester
Compression Sportswear with built-in compression is said to provide better performance and faster regeneration. This effect is also repeatedly proven in studies. Of course, you shouldn’t expect miracles. Yes No No No No No
Suitable for everyday use Yes Yes No Yes No Yes
Suitable for sports
Particularly suitable for
hike Yes Yes Yes Yes Yes No
To go biking Yes Yes Yes Yes Yes No
To run Yes Yes Yes Yes Yes No
Matching functional underpants included in the set included in the set included in the set CMP 3Y04261 Thermal underwear Long underpants included in the set Odlo BL Bottom Long Warm Kids
  • Flat seams for high wearing comfort
  • good moisture transport & quick-drying
  • with body mapping: zones with increased breathability
  • antibacterial
  • including pants
  • available in different colors
  • for girls and boys
  • good moisture transport & quick-drying
  • keeps you warm
  • including pants
  • for girls and boys
  • very good workmanship
  • high collar: warming
  • Flat seams for high wearing comfort
  • keeps you warm
  • antibacterial
  • including pants
  • for girls and boys
  • Flat seams for high wearing comfort
  • good moisture transport & quick-drying
  • keeps you warm
  • available in different colors
  • runs small
  • for girls and boys
  • good moisture transport
  • with body mapping: zones with increased breathability
  • including pants
  • runs small
  • for girls and boys
  • Flat seams for high wearing comfort
  • good moisture transport
  • keeps you warm
  • antibacterial
  • available in different colors
Questions and answers about the product Questions and answers about Prosske Dry Dynamic children’s underwear set Questions and answers about McKinley Yahto / Yaal underwear set Questions and answers about Spaio set unisex children’s underwear Questions and answers about CMP 3Y04260 thermal underwear longsleeve shirt Questions and answers about Freenord Norde Thermotech Set Questions and answers about Odlo BL Top Crew Neck Active Warm Kids Boys
To offer * To offer " To offer " To offer " To offer " To offer " To offer "
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Like a second skin – children’s functional underwear tested


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  • Functional underwear for men, women and children is worn as the bottom layer of clothing. As a so-called active wear, it lies directly on the skin and ensures that the sweat that arises during sport or in everyday life is reliably transported away and can evaporate as water vapor. It keeps us efficient and gives us a fresh feeling. A good alternative to the conventional cotton shirt.
  • Functional underwear is made from both natural and synthetic fibers. The natural fibers offer good insulation against the cold and are relatively odorless even when sweating heavily. Synthetic fibers cool the body very well, especially in summer, and then dry quickly again. A good alternative are so-called mixed fabrics, which combine the advantages of both fibers.
  • The underwear can usually be washed in the washing machine, but it is not suitable for the dryer. Washing powder should only be used in small quantities and it is best not to add fabric softener.

Whether mountain biking in the mountains or on the treadmill in the gym, in leisure time or on the way to the office, as a hobby athlete but also in competitive sports, functional underwear cuts a fine figure today. Thanks to its innovative properties, it enables a good body climate both in summer and winter and a good feeling even when it is very sweaty. It makes even the toughest training fun. So far you have not had the pleasure of doing sports with functional underwear, maybe even wearing cotton shirts? Then it’s time to try something new. The best is with the underwear from our functional underwear comparison 2019/2020. There we have put together the best functional underwear for you and tell you in the guide to functional underwear comparison what you need to look for when looking for a suitable set.

1. What is functional underwear?

Production of sweat during sport

According to experts, an untrained person loses about 0.8 liters of sweat per hour of exercise, while a trained person loses up to 3 liters.

Functional underwear, like the products from the functional underwear comparison 2019/2020, initially fulfills three very special tasks. These are: breathability, temperature regulation and insulation. So everything you could want in sweaty activities. It is worn as the bottom layer of sports clothing directly on the skin. So she can show off her strengths unhindered. The underwear, such as those available from Nike and Craft, has the option of transporting the sweat that forms on the skin when you exercise away from the body and passing it on to the next layer. There it is then released into the environment as water vapor. Good protection against hypothermia and premature loss of performance due to cooled muscles. With this she already beats the well-known and still popular cotton shirt that soaks up very quickly, to lengths. The characteristics can be described as cool without a guilty conscience.

And today the functional underwear for men, women and children is even more intelligently designed than a few years ago. Because it has been known for some time that sweating is not only annoying but also important for the body. Because sweat production serves to regulate body temperature. Today’s laundry therefore no longer wicks sweat away, but slowly and evenly. This prevents the body from sweating even more due to the lack of moisture, which is intended for cooling, and opens its pores even further to produce an even higher level of sweat. Today, manufacturers also take into account that there are some places on the body where you sweat more (back, neck, chest) or less (shoulders). The laundry is often adapted to this as well.

Here is an overview of the advantages and disadvantages of functional underwear:

  • warms and cools
  • optimal sweat transport
  • breathable
  • elastic
  • Natural fibers are often treated with chlorine and pesticides
  • synthetic fibers are often not odorless

Tip: A combination of several layers is always best. So you stay flexible even with changing temperatures. It is best to choose a jacket or pants as the top layer and as a middle layer, over the underwear, clothing made of fleece or synthetic fiber.

2. What types of functional fibers are there??

Functional underwear can consist of different materials. We tell you in the functional underwear comparison which these are exactly:

Type of functional fiber information
natural fiber Functional underwear from the natural fiber category mostly consists of silk or merino wool. The advantages here are the rapid absorption of moisture, the good insulation against the cold and the odor-inhibiting properties. Since there is no odor due to the self-cleaning function of the wool, this laundry is particularly suitable for long hiking tours or ski weekends.
synthetic fiber Synthetic fibers here are polyester, polypropylene and polyamide. They ensure that sweat is absorbed quickly and transported quickly, and they also dry very quickly. They are also easy and straightforward to clean. Thanks to the proportion, they are also very convenient. Ideally suited for summer, running sessions or on a bike tour.
mixed fabrics Many manufacturers today combine the advantages of both fibers in their products by simply using both. When buying, please make sure that the cotton content is low, otherwise the breathability will suffer greatly.

3. Buying advice for functional underwear

The best functional underwear is based on different criteria. It is important to ask about the current season, individual sweat production and personal feelings. So your functional underwear comparison winner does not have to be the general underwear comparison winner of your training partner. In our functional underwear comparison, we explain to you, based on several functional underwear tests, what exactly is important when buying.

The Energizer Summerlight Sleeveless by X-Bionic – the shirt with compression effect.

3.1. The season

Differently high or low temperatures naturally demand completely different qualities from your functional underwear. What still helped optimally in summer will probably only make you shiver in winter. So you need two sets, one for winter and one for summer. Linen made of synthetic materials such as polyester or polyamide is particularly suitable for summer. These fabrics shine particularly because of their very good cooling performance. An indispensable asset in summer. In winter, on the other hand, you are better advised to use merino wool, as it has very good thermal insulation properties. When buying, also pay attention to the manufacturer’s information regarding the optimal application.

3.2. The material

You can choose between synthetic and natural fibers. Synthetic fibers such as spandex and lycra dry particularly slowly, but are very stretchy. Polyester, on the other hand, dries very quickly. This material is therefore an unbeatable tip for people who sweat particularly hard. By the way, polyamide is very tear-resistant and ensures the longevity of the individual pieces of clothing. Unfortunately, synthetic fabrics start to smell like "human" if you want to put it nicely. So not very cool. Therefore, many manufacturers still use silver fibers against the smell of sweat. Unfortunately, the effect does not last forever. Natural fibers such as merino wool, on the other hand, are odorless, but only have a low cooling capacity. So prefer to wear in winter. If you are sensitive, the fabric will likely scratch your skin quickly. So before you buy it, try it. By the way, real organic functional underwear nowadays also consists of wood or corn.

The Nomad Tee 175 from super.natural.

3.3. The fit

The preferences regarding the fit are of course very individual. We still recommend wide models in everyday life and tight underwear for sports, e.g. from Nike, perhaps with an integrated compression effect to increase performance. Linen is comfortable to wear with the manufacturer’s note seamless. Here, the use of often annoying seams was avoided.

3.4. The skin tolerance

When it comes to skin compatibility, you are probably thinking directly of laundry made from natural fibers. Unfortunately we have to disappoint you. Cotton today is often contaminated with pesticides and merino wool is often treated with chlorine. If you want to be on the safe side, then choose a product with a TÜV Toxproof certification, an Oeko-Tex seal or a Bluesign safety certification.

3.5. The price

The price of functional underwear says little about the real quality. This was also found by Stiftung Warentest. In the 01/2011 edition, Stiftung Warentest therefore published a message with the conclusion that good functional underwear can also be available for a price of 30 euros. In its 09/2003 edition, the Stiftung Warentest carried out a functional underwear test and examined the sports underwear more closely.

4. Major manufacturers and brands

You probably already know some manufacturers like Nike or Craft. For completeness, here are a few more you should know:

  • Arc’teryx
  • ermira
  • Jack Wolfskin
  • Arc’teryx
  • Erima
  • Jack Wolfskin
  • JAKO
  • kidneykaren
  • Löffler
  • Reebok
  • Venice Beach
  • Trigema
  • Super natural
  • Stanno
  • Skins
  • Schiesser
  • Pearl Izumi
  • Moving comfort
  • Mons Royale
  • Icebreaker
  • Aclima
  • Helly Hansen
  • Patagonia
  • Rhino
  • Under Armor
  • X-Bionic
  • triumph
  • The Bakis
  • Shock absorber
  • Sassa
  • puma
  • odlo
  • normani
  • bumblebee
  • Houdini
  • Brubeck
  • adidas
  • Anita
  • Craft
  • Nike

5. Questions and answers about functional underwear

5.1. What functional underwear for motorcycle summer?

Functional underwear for motorcyclists, like the active wear for all other sports, should fit snugly. Underwear should never be left out here. As is known, motorcycle clothing is very rough. A fall can quickly result in grazes. The right underwear protects them. Functional underwear, one-piece, is most recommended for motorsport athletes. If you choose a two-part set, then the upper and lower part should overlap significantly.

A functional shirt for women from the manufacturer Vaude.

5.2. What to wear under functional underwear?

Functional underwear should lie directly on the skin so that the moisture can be transported away optimally. Underneath the woman pulls at most a sports bra.

5.3. How to wash functional underwear?

Functional underwear must not be washed too hot. This way, fibers and shape are optimally protected. Always pay attention to the manufacturer’s information. The functional underwear is also poorly compatible with washing powder and fabric softener. So use washing powder very sparingly, preferably do not use fabric softener at all. By the way, functional underwear is not part of the dryer. Better to hang next to the heater. The exception is, of course, tumble dryers that have an extra program for drying sportswear.

5.4. What functional underwear for skis?

When skiing, active phases alternate with inactive phases. Cooling is not the most important thing here because of the ambient temperature. Insulation against the cold plays a more important role here. Pay attention to thicker materials in which you still sweat little. A good tip here is laundry made from merino wool.

5.5. Where can you buy functional underwear?

Functional underwear can be bought quickly and easily on the Internet. There is a large selection of products and reviews as well as comparison results. In sports shops or in normal clothing stores, on the other hand, you can test the fit and comfort.

5.6. What functional clothing when running?

And if you’ve always wondered how to dress properly for running in winter, the answer is in the following video:


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Christina Cherry
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