How can I properly dry a down sleeping bag to maintain its loft and insulation properties?

To properly dry a down sleeping bag and maintain its loft and insulation properties, you should first check the care instructions. Then, use a large commercial dryer on low heat with clean tennis balls or dryer balls to help fluff the down. It's important to monitor the drying process and avoid overheating, as excessive heat can damage the down. Additionally, you can air dry the sleeping bag by laying it flat in a well-ventilated area, periodically fluffing and turning it to ensure even drying.