Using this seat bag is easy. First, find a suitable position on your bike's seat post. Then, use the dual - sided hook and loop strap to attach the bag securely. You can put small items like a repair kit, energy bars, or your phone inside. When riding at night, the reflective material will make you more visible to others. As for maintenance, after each use, check the strap for any signs of wear. If it gets dirty, you can wipe it down with a damp cloth. Store it in a dry place to maintain its water - resistance. Avoid overloading the bag to prevent damage to the strap or the bag itself.