Using your Ultra - Sil Stuff Sack is super easy. First, open the drawcord by unlocking the Capture Cord Lock. Then, just toss your gear inside the sack. Once your items are in, pull the drawcord tight and lock it with the Capture Cord Lock to keep everything secure. When you need to get something out, simply unlock the cord and open the sack. As for maintenance, it's a good idea to spot - clean the sack with a mild detergent if it gets dirty. Avoid using harsh chemicals as they might damage the Non - PFC DWR finish. Also, try to store it in a dry place when not in use to prevent any mold or mildew growth. And don't overstuff the sack, as it could put too much strain on the reinforced pull handle and the fabric.