Using this drink cooler is easy. Just place your regular drink can inside to keep it cool. It's a great way to enjoy your drink while also supporting a good cause. As for maintenance, you can simply wipe it clean with a damp cloth. Remember, the drink bottle is not part of the package, so use it with your own cans. Also, since it's for a good cause, keep in mind that your purchase is helping the Stonedeaf Wildlife sanctuary take care of orphaned and injured bats.