This quilt is made of Lyocell. This fibre is made of wood and is 100% organic. The production process has an excellent life cycle assessment. Excellent moisture transport - creates a comfortable, dry sleeping cave. Significantly better breathabilityExcellent climate characteristics. Air-conditioned better than all known natural and synthetic fillings. Extremely light. Lyocell greatly reduces the risk of overheating and heat build-up. Natural bacterial protection - completely without chemical additives.