Helikon-Tex US Level 2 Long Johns — thermal base layer

The Helikon-Tex US Level 2 Long Johns are thermal base-layer bottoms designed for people who work or move outdoors in cold conditions while maintaining a high level of physical activity. Weighing 240 g and made from 95% polyester and 5% elastane, they cover from the waist to the ankles and are worn as a base under any tactical, hunting or trekking trouser.

The technical polyester manages moisture by drawing it away from the skin toward the outer face of the fabric: during a fast movement or an active hunting session, sweat does not stay in contact with the body, reducing the risk of chilling when you stop. The elastane content ensures the fabric follows every movement without creating friction or bunching behind the knees — something that becomes a real problem on a long outing.

The fly is built from folded fabric with no zip: a choice that eliminates a potential stiff point and source of discomfort in a garment that stays in direct contact with the skin for hours. The trade-off is that putting them on takes one extra step compared to a zip fly, but on a base layer worn under outer trousers this is never a practical limitation, while the comfort gain on long sessions is genuine.

Key points

• Active moisture management: technical polyester wicks sweat away from the skin, keeping the body dry even under prolonged exertion.
• 5% elastane for full freedom of movement without friction or fabric bunching during movement.
• Zipless fly in folded fabric: no rigid point against the skin during extended wear.
• Low weight of 240 g: layers without bulk under tactical, hunting or trekking trousers.
• Available in seven sizes from XS to 3XL, with a waist circumference from 59 cm to 77 cm and a total length from 96 cm to 114 cm.