Our Thermal Underwear: The Ultimate Insulator and Key Advantage in The Cold.

Our thermal underwear is designed to provide reliable insulation in the freezer and coldstores, ensuring that you stay warm and productive throughout the day.

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Longsleeve Undershirt SHERPA (with Zipper) Item No.: FU20
For optimal temperature management · polo neck with zipper · ergonomic fit with raglan sleeves and extended back · close-fitting wristbands · non-restrictive flatlock seams · ideally suited for movement-intensive activities

€22.37*
Longsleeve Undershirt SHERPA Item No.: FU10
For optimal temperature management · stand-up collar · ergonomic fit with raglan sleeves and extended back · close-fitting wristbands · non-restricting flatlock seams · ideally suited for intensive exercise activities

€21.53*
Longsleeve Undershirt WIKINGER Item No.: FV20LS-02
Stand-up collar · ergonomic fit with raglan sleeves · close-fitting wristbands · non-restricting flatlock seams

€17.00*
Longsleeve Undershirt WIKINGER HYGIENE Item No.: FV20LS-00
Stand-up collar · ergonomic fit with raglan sleeves · close-fitting wristbands · non-restricting flatlock seams

€17.00*
Long Johns SHERPA Item No.: FU30
For optimal temperature management · ergonomically cut with non-restrictive flatlock seams · with double layer · comfortable elastic waistband and close-fitting bands at the end of the legs · ideally suited for movement-intensive activities

€18.38*
Long Johns WIKINGER Item No.: FV22-02
Ergonomic fit with non-restricting flatlock seams · with double layer · elastic waistband and close-fitting bands at the ends of the legs

€13.90*
Long Johns WIKINGER HYGIENE Item No.: FV22-00
Ergonomic fit with non-restricting flatlock seams · with double layer · elastic waistband and close fitting bands at the ends of the legs

€13.90*
Thermal Longsleeve Undershirt INUIT (with Zipper) Item No.: FV5763-02
With high heat insulation through plush interior · polo neck with zip · ergonomic fit with raglan sleeves and extended back · close-fitting wristbands · non-restricting flatlock seams · Ideal for: forklift drivers

€32.24*
Thermal Longsleeve Undershirt INUIT Item No.: FV5762-02
With high heat insulation through plush interior · round neck · ergonomic fit with raglan sleeves and extended back · close-fitting wristbands · non-restricting flatlock seams · Ideal for: forklift drivers

€25.73*
Thermal Long Johns INUIT Item No.: FV5765-02
With high heat insulation through plush interior · ergonomically cut with non-restrictive flatlock seams · with double layer · comfortable elastic in the waistband and close-fitting cuffs · with access · Ideal for: forklift drivers

€24.68*
20%
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Long Johns CLASSIC Item No.: FV22-B-02
Highly dissipative fabric · Unisex product · Regulates core temperature · Long and elasticated ankle cuff · Ergonomically shaped · Super lightweight · Easy-care · Unique flat-knit design

Only 44 pieces available, 3-8 days

€11.20* €14.00* (20% saved)
Undershirt Longsleeve Item No.: FV20LS-B-02
X50LS Thermal Undershirt Long Sleeve C:FX 50, - NEW - unique flat knit design · polyester/viscose · brushed for extra comfort · unisex design · elasticated cuffs · double layered at shoulders & back · figure accentuated design for better fit and more comfort

€23.00*
Undershirt Longsleeve MAYA Item No.: FV20LS-A
The long-sleeved T-shirt offers optimal protection against the cold · Made of breathable fabric with round neckline ideal for underwearMaterial: 50 % Polyester, 50 % Cotton, 200 g

€15.20*
Men-Undershirt Item No.: FV20LS-B
The long sleeved Men-Undershirt is made of breathable and functional material, that keeps you warm

€13.50*
Underpants Item No.: FV22-A
Very comfortable to wear · keeps the abdomen warm · The soft polyester-cotton blend keeps the warmth on the body · Elasticated cuffs and waistband ensure optimal comfort

€12.20*

High-Quality Underwear for Working in Cold Storage and Freezer Warehouses.

Modern functional underwear, despite its heat-retaining capacity, allows enough air to pass through its material to prevent excessive sweating. Instead of just radiating body heat like simple cotton underwear, functional underwear acts as an insulator in cooler ambient temperatures. Our cold protection clothing can be ideally complemented with a vest and matching thermal underwear.

Individual Climate Control

Fortdress underwear ensures optimal climate management when working in the cold. Moisture is transported to the outside of the clothing, keeping the body warm and dry at all times. The ergonomic fit and extra-flat laundry seams ensure maximum comfort.

Is Underwear Necessary for Extreme Cold?

To prevent freezing while working, it is important not only to wear a warm jacket or pants but also not to make mistakes with the innermost clothing layer. The time-tested onion principle is still in use today. The innermost layer is the underwear. You should not only feel warm but also ensure the transport of the moisture you produce. Especially when you are moving, you can sweat quite a bit even at very low temperatures. It is then important to wear good underwear that wicks sweat away from the skin while insulating body heat.

What Types of Thermal Underwear Are There?

Thermal underwear is mainly available in two different varieties: synthetic fiber and natural fiber (mostly wool).

Our Fortdress underwear is often made of a polyester-blended functional fiber, which has the property of drying very quickly and feeling soft against the skin. This synthetic fiber quickly absorbs moisture and immediately wicks it away from the skin. The inside of the thermal underwear is usually fluffy and soft. Due to its high functionality and breathability, it is even suitable for the highest athletic demands. Its pleasantly lightweight nature adds another plus with its very high heat retention capacity.

What to Look for When Buying Underwear:

The following points show what to pay special attention to when buying underwear to avoid regretting the purchase:

  • Fit
  • Temperature Regulation
  • Purpose
  • Breathability

Read this section to understand the exact criteria for purchasing.

Fit

Thermal underwear should fit snugly and be worn directly against the skin. You should use it as the first clothing layer.

If the thermal underwear is too loose, it cannot effectively regulate temperature. If it is too tight, it will quickly become uncomfortable, especially when moving. The tighter the thermal underwear fits, the better it can insulate.

Cut

Our tops are ergonomically designed with an extended back for kidney protection. The undershirts have raglan sleeves and snug-fitting cuffs. Our undershirts are also available with high collars and zippers.

The pants are slightly raised at the back so you can tuck in the tops, protecting the sensitive kidney area. This is reinforced by an elastic waistband. The pants fit snugly along the entire leg and extend down to the ankles.

To prevent chafing on the skin from ruining your day, the thermal underwear has flat seams that prevent rubbing and feel comfortable against the skin.

Temperature Regulation

Thermal underwear is designed to insulate the body. Depending on the material, this insulation can vary in strength. However, high insulation often compromises breathability. It does not immediately provide warmth. To achieve this effect, the body must first produce heat itself – for example, through movement. How much you need to move depends on the material.

Purpose

Different materials allow underwear to serve various functions. Remember that different materials achieve different effects. If you plan to hike in the cold, you should focus on insulation as much as possible. For athletic activities, ensure the necessary comfort and breathability.

Breathability

Depending on the material, underwear can be extremely breathable. Good underwear wicks sweat moisture to the outside air. This prevents it from soaking in, staying dry, and cooling down more slowly. Especially when moving, having breathable underwear is crucial.

What Sizes Are Available for Fortdress Underwear?

The size range is extensive, so there is something for every body type. Cold protection, for example, is available in sizes XS-6XL. The underwear fits according to our size chart and does not need to be ordered larger or smaller. A good fit is very important for this type of clothing.

What Should I Pay Attention to When Cleaning Underwear?

Before washing, always check the label. There you will find some cleaning instructions.

Generally, synthetic fiber thermal underwear is surprisingly easy to care for. Ideally, thermal underwear should be washed at 30 degrees, as this best maintains the shape of the fibers.