Using this bike bag is easy. First, use the pre - mounted straps of the Universal Bridge system to attach it to your bike. If you have a Basil DBS system or MIK adapter plates, you can also use them for attachment. When you go shopping, simply open the bag and put your groceries inside. The large 58 - litre capacity can hold a lot. Don't forget to use the drawstring to close the bag securely. In case of rain, put on the rain cover to keep your things dry. When you get home and want to park your bike in the shed, use the Velcro to fold the bag back. As for maintenance, keep the bag clean. You can use a soft cloth to wipe it. Check the reflectors regularly to make sure they are in good condition. If you notice any manufacturing or material faults within 10 years, you can claim the warranty.