Using your Basil rain cover is super easy. First, identify the bag you want to protect - it can be a laptop bag, messenger bag, or bicycle shoulder bag. Open the rain cover and place it over the bag horizontally. Use the Hook - On system at the back to quickly attach it. Then, adjust the cover using the roll - top closure and secure it with the side clicks. When riding in stormy weather, the neon yellow color and reflective sides will make you more visible. When you're done, simply remove the cover from the bag and fold it up to fit into the included storage pouch. As for maintenance, after each use in wet conditions, let the cover dry thoroughly before storing it. Avoid using harsh chemicals on the cover, as it's made of 600D strong polyester which can be damaged. With proper care, your Basil rain cover will serve you well for a long time.