Using this waist pack is a breeze. First, open the front zippered pocket and clip your keys onto the built - in clip so you can easily grab them when needed. For items you want to access quickly, like snacks or a small notepad, put them in the internal stash pocket. Keep your important things, such as your wallet or ID, in the zippered security pocket. When you're out and about, slide your smartphone into the back panel pocket. As for maintenance, if it gets dirty, simply use a mild detergent and a soft cloth to spot - clean it. Avoid using harsh chemicals that could damage the recycled polyester fabric. And when not in use, store it in a cool, dry place to keep it in good condition.