Natural Performance for Active Comfort

The Mammut W's Treewool FL L/S is a lightweight base layer designed for performance and comfort across a wide range of outdoor activities. Made with Mammut’s Treewool fabric blend, it combines merino wool with sustainable fiber technology to deliver exceptional softness, breathability, and temperature regulation.

Ideal for high-output pursuits or layering in cooler conditions, this long sleeve top efficiently manages moisture while maintaining a comfortable feel next to skin. Whether hiking, touring, or training, it offers versatile performance with a focus on sustainability and all-day wearability.

Key Features:

• Treewool Fabric Blend: Combines merino wool with plant-based fibers for comfort and performance.
• Lightweight Construction: Ideal for active use and layering without added bulk.
• Breathable Design: Promotes airflow to regulate body temperature during activity.
• Moisture Management: Wicks sweat to keep you dry and comfortable.
• Soft Next-to-Skin Feel: Provides all-day comfort with reduced irritation.
• Versatile Use: Suitable for hiking, skiing, touring, and everyday layering.