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Thermal clothing 

Do you like sports in winter? Choose functional thermal underwear that perfectly insulates heat. Thermal T-shirts and pants made of Merino wool have natural antibacterial properties. Thermal underwear made of functional polyester dries quickly and your children can engage in outdoor activities undisturbed.

Thermal clothing has many advantages:

• excellent sweat wicking

• antibacterial properties

• excellent thermal insulation

Thermal underwear Blizzard - quality guarantee

Order Blizzard men's thermal underwear, which has excellent functional properties. Merino wool thermal underwear has natural antibacterial properties.

Children's thermal underwear Fundango

Try Fundango children's thermal underwear. It will delight with quick-drying material that will keep children dry and comfortable. Another advantage is the ergonomic design for increased comfort when wearing and playing sports.

Accessories for thermal underwear

Warm socks and knee socks are suitable for thermal underwear. If you are looking for socks with high warmth, choose Heat holders socks. In the winter season, don't forget winter hats for outdoor sports activities.

Special discounts
  • Men's thermal T-shirt from Blizzard. High-quality men's thermal T-shirt with raglan sleeves. Comfortable cut and material containing merino wool ensures comfort when wearing. Merino wool is characterized by good insulating properties, thanks to which thermal underwear will keep you warm. The T-shirt for men is a great companion for the winter season. A...

    57,99 €
    Price with code "20BU"

    46,39 €

    In Stock
    In Stock
    1. XS/S
    2. M/L
    3. XL/XXL
    4. 3XL
  • The junior thermal t-shirt is designed with a tight cut that fits perfectly to the body and guarantees effective thermoregulation during winter outdoor activities. The minimalist design is complemented by a practical stand-up collar that provides extra neck protection from cold and wind. It is made of a pleasant and flexible material that allows a high...

    26,99 € 29,99 €
    Price with code "20BU"

    23,99 €

    In Stock
    In Stock
    1. 92/98
    2. 104/110
    3. 116/122
    4. 128/134
    5. 140/146
    6. 152/158
  • New

    The junior thermal pants are black leggings with a slim fit and minimalist design, which are great as a first layer for winter outdoor activities. The thermal pants are made of a comfortable and stretchy material that allows a wide range of movement and is equipped with an elastic waistband for a better fit to the body. The thermal pants are easy to wear...

    19,99 € 21,99 €
    Price with code "20BU"

    17,59 €

    In Stock
    In Stock
    1. 92/98
    2. 104/110
    3. 116/122
    4. 128/134
    5. 140/146
    6. 152/158
  • -48%

    The 4F Junior boys' thermal underwear set is a practical and stylish set of thermal underwear with a camouflage pattern that brings comfort and functionality. The compression cut of the thermal shirt fits snugly to the body, while the standard cut ensures a comfortable fit reaching to the hips. The round neckline and elastic cuffs at the end of the...

    24,95 € 47,99 €
    Reduced price!
    In Stock
    In Stock
    1. 128/134
    2. 140/146
    3. 152/158
    4. 164
  • -48%

    The 4F Junior boys' thermal underwear set is made in blue with a modern "camouflage" pattern . The set consists of a thermal T-shirt and leggings, which are designed with a compression cut, which ensures a tight fit to the body and maximum efficiency of heat retention. The thermal T-shirt has a standard cut reaching the hips, a round neckline and elastic...

    24,95 € 47,99 €
    Reduced price!
    In Stock
    In Stock
    1. 128/134
    2. 140/146
    3. 152/158
    4. 164
  • -52%

    The 4F Junior girls' thermal underwear set in a beautiful pink color brings comfort and style for cold days. The thermal underwear set has a finely structured surface and combines a thermal T-shirt with a standard cut that reaches the hips and thermal leggings with a medium length cut. The compression fit fits perfectly to the body and provides a high...

    22,95 € 47,99 €
    Reduced price!
    In Stock
    In Stock
    1. 128/134
    2. 140/146
    3. 152/158
    4. 164
  • Men's thermal T-shirt from Blizzard. Functional thermal underwear for men will be a great companion for active men in the winter. It was designed and manufactured in the Czech Republic and brings you an advanced solution in the field of comfort and performance. The black thermal T-shirt has long sleeves and a round collar. Its cut adapts to the figure and...

    28,99 € 31,99 €
    Price with code "20BU"

    25,59 €

    In Stock
    In Stock
    1. XS/S
    2. M/L
    3. XL/XXL
    4. 3XL
  • Men's thermal pants from Blizzard. Mens long pants in gray are a suitable bottom layer. High-quality merino wool material is characterized by great properties. It retains heat, has excellent thermoregulation properties. You will definitely use merino clothing in the winter, for example under ski pants. Men's thermal leggings are pleasant to the touch and...

    37,99 € 39,99 €
    Price with code "20BU"

    31,99 €

    In Stock
    In Stock
    1. XS/S
    2. M/L
    3. XL/XXL
    4. 3XL
  • New -44%

    Children's pants from Blizzard. Thermal pants are an ideal choice as a bottom layer under winter pants and will keep your child warm throughout the entire hike or walk! Black-blue thermal pants have a special method of knitting the fabric, which increases the natural properties of the materials used, they wick moisture well, are pleasant to the touch and...

    11,00 € 19,99 €
    Reduced price!
    In Stock
    In Stock
    1. 92/98
    2. 104/110
    3. 116/122
    4. 128/134
    5. 140/146
    6. 152/158
  • -55%

    The black long-sleeved thermal T-shirt for men is the perfect first layer of clothing, ideal for wearing under tops. It has a tight cut that perfectly hugs the body and provides comfort without restricting movement. The seamless construction minimizes the risk of chafing and irritation during activities, while ventilation zones promote air circulation and...

    16,95 € 37,99 €
    Reduced price!
    In Stock
    In Stock
    1. S/M
    2. L/XL
    3. XXL/3XL
  • Women's thermal T-shirt from Blizzard. High-quality women's thermal T-shirt with raglan sleeves. Comfortable cut and material containing merino wool ensures comfort when wearing and doing sports. Merino wool is characterized by excellent insulating properties, thanks to which the thermal underwear will keep you warm. Thermal T-shirt for women will please...

    57,99 €
    Price with code "20BU"

    46,39 €

    In Stock
    In Stock
    1. XS/S
    2. M/L
    3. XL/XXL
  • Men's thermal pants from Blizzard. Functional thermal underwear for men is a great companion for active men in the winter. It is suitable for skiing, winter hiking or similar activities. It was designed and manufactured in the Czech Republic and brings you advanced solutions in the field of comfort and performance. Functional thermal leggings have a...

    24,99 € 27,99 €
    Price with code "20BU"

    22,39 €

    In Stock
    In Stock
    1. XS/S
    2. M/L
    3. XL/XXL
    4. 3XL
  • -43%

    The 4F Junior girls' thermal underwear set is designed to provide maximum comfort and thermal protection on cold days. The black thermal underwear set has a finely structured surface and a compression cut that fits snugly to the body, ensuring perfect heat retention. The girls' thermal T-shirt with a standard cut reaching to the hips is complemented by a...

    26,95 € 47,99 €
    Reduced price!
    In Stock
    In Stock
    1. 128/134
    2. 140/146
    3. 152/158
    4. 164
  • -57%

    Men's 4F thermal pants are the best first layer of clothing. The thermal bottoms reach to the ankles and are designed to be worn under the top layer. The tight cut provides a comfortable and secure fit, which promotes freedom of movement during winter sports activities. The seamless construction minimizes the risk of chafing and irritation, while...

    13,95 € 32,99 €
    Reduced price!
    In Stock
    In Stock
    1. S/M
    2. L/XL
    3. XXL/3XL
  • New -32%

    The 4F Junior boys' thermal underwear set in classic black offers reliable thermal comfort and a stylish look for winter days. The thermal underwear set is designed with a seamless construction, which, combined with 4F Skin technology, ensures flat seams for maximum wearing comfort. The compression cut fits perfectly to the body and guarantees a high...

    28,95 € 42,99 €
    Reduced price!
    In stock
    In Stock
    1. 128/134
    2. 140/146
    3. 152/158
    4. 164
  • -49%

    Blizzard boy's T-shirt. Thermal clothing will be a great accessory as a bottom layer for skiing, sledding or other winter outdoor activities. The undershirt for boys helps maintain body and muscle temperature with a special NoWet knitting method that creates a structure that enhances the natural properties of the materials. This type of knitwear helps...

    15,00 € 29,99 €
    Reduced price!
    In Stock
    In Stock
    1. 92/98
    2. 140/146
    3. 152/158
  • Women's thermal pants from Blizzard. Women's thermal pants in gray are a suitable bottom layer. The high-quality merino wool material is characterized by great properties. Thermal clothing for women is comfortable to wear, the material is pleasant to the touch. Women's thermal underwear has great insulating properties and does not hinder movement. It is...

    37,99 € 39,99 €
    Price with code "20BU"

    31,99 €

    In Stock
    In Stock
    1. XS/S
    2. M/L
    3. XL/XXL
  • -44%

    Children's pants from Blizzard. Thermal pants are an ideal choice as a bottom layer under winter pants and will keep your child warm throughout the entire hike or walk! Black and pink thermal pants have a special method of knitting the fabric, which increases the natural properties of the materials used, they wick moisture well, are pleasant to the touch...

    11,00 € 19,99 €
    Reduced price!
    In Stock
    In Stock
    1. 92/98
    2. 104/110
    3. 116/122
    4. 128/134
    5. 140/146
    6. 152/158
  • -49%

    Girl's t-shirt brand Blizzard. Thermal clothing will be a great accessory as a layer under a sweatshirt for skiing or other winter outdoor activities. The undershirt for girls helps maintain body and muscle temperature with a special NoWet knitting method that creates a structure that enhances the natural properties of the materials. This type of...

    15,00 € 29,99 €
    Reduced price!
    In Stock
    In Stock
    1. 128/134
    2. 140/146
    3. 152/158
  • -31%

    Children's T-shirt from Blizzard. A thermal T-shirt in a black and pink color combination for children will come in handy especially in the winter, when it will keep your child warm and comfortable throughout their stay outdoors. The children's undershirt helps maintain body and muscle temperature with a special NoWet knitting method that creates a...

    15,00 € 21,99 €
    Reduced price!
    In Stock
    In Stock
    1. 92/98
    2. 104/110
    3. 116/122
  • New -49%

    Children's T-shirt from Blizzard. A thermal T-shirt for children is especially useful in the winter, when it will keep children warm and comfortable throughout their stay outdoors. The children's undershirt helps maintain body and muscle temperature with a special NoWet knitting method that creates a structure that enhances the natural properties of the...

    15,00 € 29,99 €
    Reduced price!
    In Stock
    In Stock
    1. 104/110
    2. 116/122
    3. 128/134
  • Women's thermal T-shirt from Blizzard. Functional thermal underwear for active women will be a great companion in the winter. It is suitable as a bottom layer for skiing, hiking or other winter activities. It was designed and manufactured in the Czech Republic and brings you an advanced solution in the field of comfort and performance. The black thermal...

    28,99 € 31,99 €
    Price with code "20BU"

    25,59 €

    In Stock
    In Stock
    1. XS/S
    2. M/L
    3. XL/XXL
  • Women's thermal pants from Blizzard. Functional thermal underwear for women is a great companion during various activities in the winter season. It is suitable as a bottom layer for skiing, winter hiking or similar activities. It was designed and manufactured in the Czech Republic and brings you advanced solutions in the field of comfort and performance....

    24,99 € 27,99 €
    Price with code "20BU"

    22,39 €

    In Stock
    In Stock
    1. XS/S
    2. M/L
    3. XL/XXL
  • -57%

    Men's thermal T-shirt from Blizzard. Grey Mens long sleeve T-shirt in a comfortable cut with raglan sleeves ensures comfort and freedom of movement. The thermal T-shirt is made of soft material that is pleasant to the touch and offers good insulating properties. The long-sleeved T-shirt is a guarantee of warmth even in freezing weather. Men's T-shirt will...

    17,00 € 39,99 €
    Reduced price!
    In Stock
    In Stock
    1. XS/S
    2. M/L
    3. XL/XXL
    4. 3XL

We recommend

Blog articles

How to choose children's thermal underwear: how to keep children warm and comfortable on cold days
2025-10-16 08:02:57

How to choose children's thermal underwear: how to keep children warm and comfortable on cold days

Children's thermal underwear is an integral part of a child's wardrobe, especially during the colder months. It serves as the first layer of clothing that keeps the child's body dry and warm, preventing colds and ensuring comfort during games and outdoor activities.

Thermal underwear: what are its advantages and how to wear it?
2018-10-18 15:58:20

Thermal underwear: what are its advantages and how to wear it?

A few months ago we wrote about how to properly layer your clothing in the mountains. Today we'll take a closer look at the bottom layer - thermal underwear, or in other words, thermal underwear. What materials is it made of and how to choose the right one?