Helly Hansen LIFA Merino Midweight Crew Thermal Baselayer Top - Men's Dark Blue XL

On a biting cold morning at the ski resort, a mountaineer pulls on this dark blue crew over a base layer, feeling the immediate warmth of merino wool against his skin while the LIFA inner fabric wicks away the first sweat of the climb. The Helly Hansen LIFA Merino Midweight Crew is built for men who demand reliable thermal regulation during high-output cold-weather activities like skiing, hiking, and alpine trekking.

Key specifications

• Material: 65% Merino Wool, 35% Polypropylene (LIFA) – 225 g/m² midweight fabric
• Technology: LIFA® Stay Warm Technology with 2-layer construction (LIFA inner, Merino outer)
• Neckline: Crew neck; Sleeve length: Long sleeve
• Fit: Regular fit with flatlock seams for comfort
• Moisture management: Highly breathable, moisture-wicking, and naturally odor-resistant
• Care: Machine washable; mulesing-free merino wool

Why choose it

This baselayer top combines the natural warmth and odor resistance of merino wool with the durable moisture management of LIFA polypropylene. The two-layer construction moves sweat away from your skin while trapping heat, keeping you dry and comfortable in temperatures from cool to freezing. Flatlock seams prevent chafing, and the non-itch fabric feels soft against the skin, even during all-day wear.

Ideal use cases

• Cold-weather skiing and snowboarding
• Winter hiking, mountaineering, and alpine climbing
• High-aerobic activities in low temperatures, such as trail running or cross-country skiing
• Everyday cold-weather layering under a midlayer or shell

Good to know

Merino wool is naturally thermoregulating and resists odor, so you can wear this top multiple times between washes. The LIFA inner layer actively pushes moisture away from your skin, preventing that clammy feeling during intense exertion. For best results, machine wash cold and lay flat to dry.