G-1000 (HeavyDuty)®: This material is extra tough, water-resistant and incredibly long-lasting. G-1000® is tough, however, G-1000 HeavyDuty® goes a little step further. It takes durability to a whole new level. It is used for products where resilience, rather than airflow, is a necessity. In other words, places that are susceptible to extra hard wear. Recycled Polyester/Polyamide: Fjallraven uses recycled from pet bottles, unusable second-hand fabric and offcuts substances in order to prevent waste, be eco-friendly and reduce air, water and soil contamination. Organic cotton: Fjallraven cotton material is without toxic pesticides and synthetic fertilizers. Using organic cotton systems supports biodiversity, healthy ecosystems, improve the quality of soil and less water substance. Cotton is recommended for outdoor activities due to its moisture-binding properties with a later cooling effect. ECO: Waterproof, breathable and sustainable material with fluorocarbon-free impregnation, outer fabric in recycled polyester, climate compensated production and last but not least very easy to recycle.