100% Natural Performance for the Technical Mountaineer

The Mammut Men’s Tree Wool FL T-Shirt is an outdoor all-rounder that proves you don't need synthetic fibers to achieve elite technical performance. This high-performance tee is crafted from a 100% natural fiber blend of premium RWS-certified Merino wool and Lyocell—a biodegradable fiber extracted from sustainably grown wood. This specialized hybrid construction leverages the natural cooling properties of Lyocell alongside the temperature-regulating and odor-neutralizing benefits of Merino wool, ensuring you stay fresh and comfortable from the valley floor to the summit.

Designed for versatility across hiking, climbing, and spring skiing, the Tree Wool FL features a relaxed cut that is optimized for total freedom of movement. The fabric is exceptionally breathable and fast-drying, making it a reliable base layer for high-intensity efforts or a comfortable standalone piece for rest days. With its soft, silk-like feel against the skin and its commitment to biodegradable, eco-friendly materials, this tee is a responsible and high-performing choice for any mountain athlete.

Key Features:

• 100% Natural Fiber Blend: Combines premium Merino wool with biodegradable wood-derived Lyocell for unmatched comfort.
• Superior Temperature Control: Technical natural fibers help manage body heat across a wide range of conditions and intensities.
• Inherent Odor Neutralization: Natural anti-microbial properties of Merino wool keep the shirt fresh over multi-day trips.
• Rapid-Drying Performance: Specifically engineered to move moisture away from the body and evaporate quickly.
• Optimized Freedom of Movement: Relaxed athletic cut provides unrestricted mobility for climbing, hiking, and skiing.
• Soft "Tree Wool" Feel: Lyocell fibers provide a smooth, cooling sensation against the skin, ideal for sensitive skin.
• Eco-Friendly & Biodegradable: Made with RWS-certified wool and sustainably sourced wood fibers for a lower environmental footprint.
• Versatile All-Rounder: Perfectly suited for technical mountain objectives, outdoor training, or casual everyday wear.