Using your DeWalt TSTAK Mobile Cooler is a breeze. First, open the lid and put in your drinks and ice. Close the lid to keep the cold air inside and make the ice last up to 3 days. When you need to move it around the job site, use the telescopic handle and roll it on the 7 - inch wheels. You can easily open your soft - drinks using the bottle opener on the lid and place your cans in the holders. As for maintenance, clean the cooler regularly with a mild detergent and water. Make sure to dry it thoroughly before storing. Avoid exposing it to extreme heat or sharp objects. Also, when not in use, keep it in a cool, dry place. And don't forget, you can stack it with other TSTAK storage modules for better organization.