I used it this winter at work, so I already have some observations. For work where you know there will be a lot of movement, it's a bit poorly breathable, which ends up making you sweat, and it's made of material that isn't necessarily pleasant to wear when it's wet. As the name suggests, I would treat this as a second layer, and in the fall, you can use it as a softshell if you have bought a size larger. If you put some long-sleeve merino underneath, you'll have a really solid layer on you. For outdoor work, I would rather choose wool, but for camping where there isn't as much movement, it works great.
Helikon-Tex US LVL 2 Olive Green Thermal Underwear - set
The Helikon-Tex thermal underwear set features an Olive Green pair of leggings and a matching long-sleeved top. Serving as the second layer within the ECWCS (Extended Cold Weather Clothing System) uniform utilized by the US Armed Forces, the set is constructed from lightweight, tough, and thermally efficient Comfort Dry fleece. This material effectively draws moisture away from the skin while maintaining warmth. Thanks to the inclusion of elastane, the fabric offers flexibility and does not limit range of motion.
Thermal Comfort Dry fleece
Crafted from Comfort Dry thermal fleece, this underwear set features a composition of 95% polyester and 5% elastane. The material ensures rapid drying and efficiently transports moisture away from the skin, delivering reliable thermal comfort even during demanding physical exertion. Thanks to a special grid-like structure, the surface area for evaporation is maximized, while the fleece fibers provide excellent insulation against cold temperatures. Designed to work seamlessly with other ECWCS layers or compatible thermal garments, this underwear set performs exceptionally well in chilly or transitional climates.
Well-thought-out design, high collar
Designed with long sleeves featuring integrated thumb holes, the shirt keeps the sleeves securely in place during rapid movement and delivers additional warmth to the hands. An extended back panel ensures the shirt stays in position while crouching, providing enhanced lower back protection from the cold. Flat seams significantly reduce the potential for skin irritation. A high collar offers protection to the neck from wind and cold, while a long front zipper allows for straightforward ventilation.
Fitted leggings
Featuring elasticated cuffs at both the waist and ankles, these leggings ensure a secure fit to the wearer’s body, effectively reducing unnecessary heat loss. Engineered with a fabric and cut that guarantee unrestricted movement. A traditional fly adds further utility. Flat seams are utilized to significantly lower the chance of chafing.
Main features
- Constructed from thermal Comfort Dry fleece, the underwear delivers effective insulation.
- Flat seams reduce the likelihood of chafing during prolonged wear.
- Sleeves feature thumb holes for added protection and ease of movement.
- Elastic cuffs are integrated at both the waist and leg openings for a secure fit.
- The fabric offers rapid drying characteristics and efficiently wicks moisture away.
- A high collar enhances protection against cold wind.
- The set is engineered to maintain optimal thermal comfort in low-temperature environments.
Technical data
Shade: Olive Green
Variant: US LVL 2
Composition: 95% polyester, 5% elastane
Fabric weight: 210 g/m2
Item weight: 554 g
Produced by: Helikon-Tex, Poland
Militaria.pl is the official distributor of Helikon-Tex.
Helikon-Tex is a Europe-based brand delivering trusted quality and accountable manufacturing founded in 1983, specializing in the production of tactical, military and outdoor clothing. It offers a wide range of products such as clothing, backpacks, bags and tactical accessories, which have gained recognition among both uniformed services and outdoor enthusiasts. Its offer includes distinctive product lines such as Bushcraft - dedicated to survival enthusiasts, Law Enforcement - designed for uniformed services, and Range - created for shooters. Helikon-Tex uses modern camouflage patterns, such as MultiCam, ATACS and PenCott, ensuring adaptation to various terrain conditions.
| Gender | Men's |
|---|---|
| Main color | Olive Green |
| Color/camouflage | Green hue |
| 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-02 |
| 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: 179
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The Helikon-Tex US LVL 2 Black thermal underwear set is of excellent quality. In winter, when there was no electricity or heating, it effectively protected me from the cold in the apartment. I definitely recommend this product.
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I bought them for overnight stays during cold, winter nights while camping at -3°C and they kept me warm in my sleeping bag. They are extremely comfortable, and with my weight of 100 kg, size 3XL is just right.
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Helikon US LVL 2 Olive Green thermal underwear set - what is Helikon stays Helikon. Great set. Really warm. In my case, at 180 cm height and 85 kg weight, I had to change the pants to size M and the top to size L, and it fits fine.
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A big plus for the quality of workmanship. Combined with the first layer, the thermal comfort is at a good level. It retains heat very well and wicks away sweat excellently. A great purchase.
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The best underwear you can buy here on the site, I already own 2 sets. It will be the warmest when combined with LVL1. The size matches the size chart. After a long period of intensive use, I can say that it does not pill.
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Extremely comfortable jacket, excellent cut, very warm and effectively wicks away moisture. While rollerblading at 70 km/h and -5°C, I didn't feel cold. Excellent product, highly recommended!
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Comfortable set, very cozy. Together with level 1 it goes perfectly under a jacket on cold winter evenings. The quality matches its price. I'm 183 cm tall and weigh 74 kg, size L is suitable for me—not very tight, but not very loose either.
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This underwear is a great thing. It retains body heat very well and the waffle structure makes sweat moisture more effectively wicked away outside. I wear it during activity in winter and in spring or autumn if I need to stay still or sleep outdoors.
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187cm - XL and you don't know what frost is, you can even start wishing for frost ;) It's as if you've installed a set of radiators around you. Pure pleasure to wear. I don't complain about the zipper, probably because I have thick skin :)
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Works excellently. Warm and pleasant. Wicks away moisture very well. We'll see how long this set lasts over time, so far there's nothing to complain about.
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Very warm underwear set. Tested both in training conditions as a liner under uniform trousers and as pajamas. Works well at temperatures around -10 degrees. Thicker and warmer than LVL1. Solid workmanship means nothing comes apart.
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Helikon US LVL 2 thermal underwear is an excellent choice for chilly days. Its light, quick-drying material effectively retains warmth while wicking moisture out. Thanks to the well-thought-out design and flat seams, it's comfortable to wear, with no risk of chafing. The longer back of the shirt provides extra protection for the lower back. It's a reliable set for those who value comfort and functionality in tough conditions.
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The whole set works exceptionally well both in the field and for everyday use. It retains heat at temperatures down to -8°C, which combined with its low price makes it a good alternative to other popular sets of this type.
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Very warm, comfortable and pleasant for the skin. No problem, you can feel comfort and warmth at -10°C wearing a uniform and jacket. The price for the quality of the product and its features is very affordable. I highly recommend it.
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