Using your Stanley Classic Green Lunch Box is a breeze. First, open the box using the sturdy latches. Place your food items inside the roomy interior. If you have a Stanley Vacuum Bottle or Mug, you can secure it in the metal bracket inside the lid. When closing the box, make sure the latches are properly fastened. As for maintenance, simply wipe the interior and exterior of the box with a damp cloth. Avoid using abrasive cleaners that could damage the 0.6mm SPCD Steel. When not in use, store the lunch box in a cool, dry place. Also, remember to check the compatibility of your bottle or mug with the lid bracket based on the lunch box's capacity.