The Mammut Ducan FL Half Zip T-Shirt is a high-performance technical base layer engineered for high-output mountain activities where moisture management is paramount. Constructed from 100% recycled polyester, this sustainable "Fast and Light" (FL) garment excels at wicking sweat away from the skin, ensuring you remain dry and comfortable during strenuous climbs or fast-paced trail runs. To keep you feeling fresh on multi-day treks, the fabric is integrated with HeiQ Fresh FFL, a pioneering bio-based silver-free technology that targets and neutralises odours at the source. Whether you are tackling a technical alpine ascent or a humid summer hike, the Ducan’s airy, lightweight knit construction provides the reliable thermal regulation required for serious mountain athletes pushing their limits in variable conditions.

Designed with a sleek Athletic Fit, this t-shirt minimizes bulk while maximizing movement, making it an ideal first layer within a modern layering system. The standout feature is the extended half-length front zipper, which serves as an effective manual thermostat for rapid ventilation when the intensity peaks or the sun hits the south face. Weighing in at a mere 140g, it offers a superb warmth-to-weight ratio and packs down to nothing in a summit pack. Flatlock seams throughout prevent chafing under backpack straps, and the quick-drying nature of the recycled polyester means it can be washed and dried overnight at a mountain hut. It is a versatile, eco-conscious staple for any hiker seeking professional-grade performance without compromising on environmental responsibility.

Mammut Ducan FL Half Zip T-Shirt Features

• 100% recycled polyeste
• Treated with HeiQ Fresh FFL - a bio-based technology that reduces unpleasant odors
• Quick drying
• Long half-length zipper

Fit: Athletic
Weight: 140g