Down sleeping bags
Fluff
— insulation based on natural down (duck or goose). Its main advantage is excellent thermal insulation, which is why this material is primarily used in premium-class winter sleeping bags. The main drawback of down is its sensitivity to moisture: it easily gets wet, takes a long time to dry, and loses its insulating properties almost completely when wet. However, most manufacturers equip down sleeping bags with a water-repellent coating and/or special covers.Show