
Helikon-Tex Underwear Top US LVL 2 Black
Item no.: BL-UN2-PO-01-BXX
Availability: Pick an option
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Description
Thermoactive Base Layer for Temperature Regulation in Layering Systems
The Helikon-Tex Underwear Top US LVL 2 is designed as a functional base layer for cold to variable weather conditions. Its blend of polyester and elastane ensures an optimal balance between insulation, mobility, and breathability. Weighing only 339 g and featuring a fabric density of 220 g/m², it is lightweight, close-fitting, and perfectly suited for integration into layering systems. The construction supports rapid body warmth retention while maintaining a stable microclimate under fluctuating levels of exertion.
Material and Construction
Made from a polyester-elastane blend (95% polyester, 5% elastane), the shirt offers high dimensional stability and excellent quick-dry performance. The fiber structure efficiently wicks moisture away from the skin, preventing sweat accumulation and the risk of cooling down. Breathability is maintained even under intense physical activity. The smooth surface texture minimizes friction when worn under additional layers — a critical advantage in cold weather protection systems.
Performance and Function
With its thermoactive structure, the US LVL 2 Top reliably regulates body temperature during different levels of activity. While ascending, the fabric disperses excess heat; during rest periods, it minimizes heat loss. Its quick-drying properties make it highly practical for long missions, bivouacs, or expeditions where clothing must be quickly re-deployable. The ergonomic, tight-fitting cut promotes efficient moisture transport away from the body, maintaining a consistently dry feel. The integrated quarter-zip closure supports individual adjustment for heat and moisture regulation.
Use Scenarios
Whether on winter marches, high-altitude training, or tactical operations in cold environments – the Underwear Top US LVL 2 is tailored for conditions where warmth, weight, and moisture control must align. It functions effectively beneath softshells and weatherproof jackets, or as a standalone layer during rest phases in milder climates. Its easy-care material composition ensures durability and resilience against frequent washing, making it a reliable asset in any cold-weather gear configuration.
- Weight: 339 g
- Material: 95% polyester, 5% elastane
- Fabric weight: 220 g/m²
- Thermoactive: efficient thermal insulation and temperature regulation
- Moisture management: rapid sweat transport and evaporation
- Quick-drying: reduced drying time compared to conventional fabrics
- Elastic fit: optimized freedom of movement with close-body profile
- Zipper: 1/4 front zip closure
- Use case: base layer for cold to temperate conditions
- Easy care: retains shape and durability under frequent use
US LVL 1 vs. US LVL 2 – Which Base Layer Fits Your Mission?
Helikon-Tex offers two functional long-sleeve shirts – the US LVL 1 and the US LVL 2 – each tailored for specific environmental conditions and operational demands:
- US LVL 1 is the ideal lightweight base layer for warm to moderate climates. With its low weight, high breathability, and UV protection, it's perfect for summer patrols, physical training, or active movement under sustained conditions.
- US LVL 2 is the go-to option for cold or variable weather. It provides additional insulation, a close ergonomic fit, and a 1/4-length zipper for precise thermal and moisture control – ideal for alpine missions, winter operations, or bivouac use with lower physical output.
Both shirts are thermoactive, quick-drying, and optimized for layering systems – the key factor is the ambient temperature and level of physical exertion during the operation.
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Attributes
Color: Black
Weight: 339 g
Material: 95% polyester, 5% elastane
Type / Function: Functional clothing, Long sleeve
Brand: Helikon-Tex
Model: UnderwearTopUSLVL2
Sex: Men -
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Product safety
Manufacturer information:Entire M sp. z o.o.
Email:
Radomska 34
54-032 Wrocław
Poland (PL)
Phone: +48 71 769 45 90
Web: www.helikon-tex.com
[email protected]
Responsible person:Entire M sp. z o.o.
Email:
Radomska 34
54-032 Wrocław
Poland (PL)
Phone: +48 71 769 45 90
Web: www.helikon-tex.com
[email protected]