Brubeck Extreme Thermo heren thermo-ondershirt sweatshirt - donkergrijs, maat M

On a biting winter morning, a mountaineer pulls on the Brubeck Extreme Thermo Sweatshirt before heading above the tree line. The seamless two-layer knit traps body heat while wicking sweat away from the skin, keeping him dry and warm even during intense ascents. This dark grey, long-sleeve crew neck base layer is engineered for high-output cold-weather sports, offering a body-hugging fit that moves with you.

Key specifications

• Material: 60% Polyamide, 38% Polypropylene, 2% Elastane
• Thermal rating: Extreme Thermo – high insulation for very cold conditions
• Technology: Seamless BTP® (Brubeck Thermo Protection) two-layer knit
• Moisture management: Excellent wicking and quick-drying
• Breathability: High, with anti-allergic and bacteriostatic properties
• Fit: Ergonomic, body-hugging, high elasticity
• Care: Machine wash at 40°C, do not tumble dry, iron, bleach, or dry clean

Why choose it

The Extreme Thermo Sweatshirt is built for athletes who demand warmth without bulk. Its polypropylene inner layer rapidly moves moisture outward, while the polyamide outer layer insulates and resists abrasion. The seamless construction eliminates chafing, and the bacteriostatic finish keeps odour at bay during multi-day adventures. Whether you're skiing, snowboarding, or trail running in freezing temperatures, this base layer maintains a stable microclimate next to your skin.

Ideal use cases

• Alpine skiing and snowboarding in sub-zero conditions
• Winter hiking, mountaineering, and ice climbing
• High-intensity running and cycling in cold weather
• Layering under insulated jackets for extended outdoor work

Good to know

Designed and manufactured in Poland, this sweatshirt is part of Brubeck's Extreme Thermo line, known for its advanced thermal protection. The dark grey colour pairs easily with any outerwear, and the size M fits true to size for a compressive yet comfortable base layer. For best results, wash with similar colours and avoid fabric softeners to preserve wicking performance.