The famous Mammut Logo T-shirt is now available in BioRe organic cotton. BioRe stands for: 1. produced according to organic criteria; 2. Quality: high-quality materials and workmanship; 3. Ecological: no use of harmful substances or heavy metals; 4. Transparency: control over all production stages throughout the entire value chain; 5. Fairness: humane production conditions throughout the entire value chain.