Using the Spark sleeping bag is easy. Just unzip it and lay it out in your tent or sleeping area. Make sure to zip it up properly to keep the warmth in. When using it with a partner, align the zippers of the two bags and zip them together. For the best performance, avoid overstuffing the bag. Also, try not to use it in extremely wet conditions for long periods, as even though it's water - repellent, excessive moisture can reduce its insulation. When it comes to maintenance, spot - clean any dirty areas with a mild detergent and lukewarm water. If it needs a full wash, use a down - specific cleaner and follow the washing machine's gentle cycle instructions. After washing, dry it thoroughly on a low - heat setting and fluff it up to restore the down's loft. Store it in a loose, breathable storage bag to maintain its shape and performance.