I purchased these to use as sleep wear during the cold winter months while camping at -3 they kept me warm in my sleeping bag. They are very comfortable and at 100kg the size 3XL fit me perfectly.
Helikon-Tex US LVL 2 Black Thermal Underwear - set
The black thermal underwear set from Helikon-Tex, which includes a long-sleeved shirt and leggings, serves as the second layer in the ECWCS (Extended Cold Weather Clothing System) used by the US Armed Forces. The set is made of lightweight and durable Comfort Dry fleece, which effectively wicks away moisture and retains body heat. The addition of elastane makes the fabric flexible and ensures freedom of movement.
Thermal Comfort Dry fleece
The underwear set is made from Comfort Dry thermal fleece, consisting of 95% polyester and 5% elastane. The fabric dries rapidly and efficiently draws moisture away from the skin, ensuring warmth even during intense activities. A grid-like weave structure enhances the evaporation area, while the fleece fibers deliver superior insulation in cold environments. The set seamlessly integrates with other layers of the ECWCS system or other thermal garments, making it perfect for cold and transitional seasons.
Well-thought-out design, high collar
The shirt has long sleeves with thumb holes, which prevent them from sliding during movement and additionally warm the hands. The extended back protects the lower back from cooling down, especially when squatting. Flat seams reduce the risk of skin irritation. The high collar protects the neck from wind and cold, and the long front zipper makes it easy to put on and provides ventilation.
Fitted leggings
The leggings are designed with elastic cuffs at the waist and ankles to ensure a snug fit and maintain body warmth. The fabric and cut offer freedom of movement. A traditional fly is included for convenience. Flat seams minimize the risk of chafing and skin irritation.
Main features
- underwear made of thermal Comfort Dry fleece
- flat seams that minimize the risk of chafing
- thumb holes in the sleeves
- elastic cuffs at the waist and legs
- the fabric dries quickly and wicks away moisture
- high collar
- the set provides thermal comfort in low temperatures
Technical data
Color: Black
Model: US LVL 2
Material: 95% polyester, 5% elastane
Grammage : 210 g/m2
Weight: 554 g
Manufacturer: Helikon-Tex, Poland
MILITARY is the official distributor of Helikon-Tex.
Helikon-Tex is a Polish company operating since 1983, specializing in the design and manufacture of tactical, military and outdoor clothing. The brand’s range comprises clothing, backpacks, bags and various tactical accessories that have gained popularity among professionals and outdoor enthusiasts alike. Its product lines include Bushcraft – for survival enthusiasts, Law Enforcement – designed for uniformed services, and Range – aimed at shooters. The company employs modern camouflage patterns, including MultiCam, ATACS and PenCott, ensuring effective concealment in diverse terrain conditions.
| Gender | Men's |
|---|---|
| Main color | Black |
| Color/camouflage | Black |
| Main material | 95% Polyester |
| Additional material | 5% elastane |
| Material type | Synthetic |
| Material flexibility | Extensible |
| Sleeve length | Long |
| Cut | Fitted |
| Seams | flat |
| Grammage | 210 g/m2 |
| Weight | 554 g |
| Thermal underwear type | T-shirt with long sleeves, Leggings |
| Manufacturer code | KP-UN2-PO-01- |
| Brand | Helikon-Tex |
| EAN |
ECWCS stands for Extended Cold Weather Clothing System, a clothing system developed in the 1980s by the US Army for use in winter conditions. Consisting of several different layers, the system allows the garment to adapt to changing weather conditions, providing optimal protection against the cold.
ComfortDry is a technology that provides fabrics with quick-drying properties. Thanks to special fibers and fabric construction, it enables the effective wicking of moisture from the body, keeping the skin dry and ensuring comfort during activity.
Reviews with photos
Review summary
Number of reviews: 177
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Helikon US LVL 2 Olive Green – thermal underwear set. Helikon as always does not disappoint. Great set, really very warm. With my height of 180 cm and weight of 85 kg, I had to exchange the pants for size M and the top for size L – then everything fits perfectly.
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A big advantage is the quality of workmanship. Together with the first layer, it provides good thermal comfort. It keeps warmth very well and effectively wicks away sweat. I am satisfied with the purchase.
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This is the best underwear available on this site, I already have two sets. It keeps you the warmest when combined with LVL1. The size matches the one listed in the table. Even after long, intense wear, no pilling forms on it.
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Too much happiness. The cut is very comfortable, it's very cozy, very warm, and it wicks sweat very quickly. The rides in the courier at 70 km/h and -5°C are not even felt! An excellent thing. I definitely recommend it!
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Very comfortable set, providing comfort. Combined with level 1, perfect under a jacket for winter evenings. Quality matches the price. I am 183 cm tall, weigh 74 kg – size L is suitable, not too tight or loose.
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This underwear protects very well against the cold and efficiently wicks away moisture thanks to the special structure of the material. I wear it during movement in winter, and in spring and autumn when I plan to remain still for a long time or sleep outdoors.
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I am 187 cm tall, wear XL, and even low temperatures don't bother me – with this underwear you can even wish for frost. Wearing it is pure joy. The zipper doesn't bother me at all, maybe I'm just less sensitive.
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The underwear fulfills its purpose perfectly. It's warm, pleasant, and moisture is effectively wicked away. So far, I haven't noticed any flaws; time will tell how durable this set will be.
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The underwear set is very warm. It works well as insulation under uniform pants and as pajamas. It holds up even at -10°C. It is thicker and warmer than LVL1. Well made and does not unravel.
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Helikon US LVL 2 thermal underwear is a great choice for colder days. The lightweight and quick-drying material retains warmth well and wicks moisture to the outside. Thoughtful design and flat seams make it very comfortable and prevent chafing. The extended back of the shirt additionally protects the back. This is a reliable set for those who value comfort and functionality in demanding conditions.
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The set works great both during outdoor activities and for everyday use. It keeps you warm even at -8°C, and the price is reasonable, making it a good alternative to standard sets.
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The underwear is very warm, comfortable and pleasant to the touch. It provides high comfort even at -10°C when worn under a uniform and jacket. The price matches the high quality and properties of the product. Definitely recommend it.
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The thermal underwear is warm and comfortable. The size runs a bit larger than standard. At 187 cm tall and 93 kg, L would be suitable. The material is pleasant to the touch, the fastening protects the neck, and the zipper has extra coverage.
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Compared to my previous, non-branded set, Helikon is amazing. It maintains a very good temperature and comfort of wear. I recommend it to everyone.
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