### Mammut Says ###

When you want to turn up the intensity, this technical first layer has your back. Moisture-wicking, quick-drying 100% recycled polyester helps you feel airy and cool throughout the day – no matter how sweaty the challenge. The half zip provides extra ventilation when you need it. And long-lasting bio-based HeiQ Fresh treatment reduces odors. For serious days in the mountains, the Ducan Half Zip T-shirt delivers reliable performance.