Using your Rig-Tig Hottie Vacuum Jug is super easy. Just unscrew the clever screw cap, pour in your favorite hot coffee or tea, and screw the cap back on. It'll keep your drink hot for hours, so you can enjoy it at your own pace. When it comes to cleaning, you can simply wash the glass insert and the cap with mild soap and water. Make sure to dry them thoroughly before reassembling. Avoid using abrasive cleaners as they can damage the materials. Also, be careful when handling the glass insert to prevent breakage. This jug is covered by a 30-day return policy, so if you have any issues, you can always reach out to us.