http://www.amazon.ca/Contigo-Stainl..._sbs_79_5?ie=UTF8&refRID=1JQQV5PM9HQVCM30083B I bought this mug because I was getting tired of paper cups and the high spill risk in a new car. I've only used this travel mug for one day but it is well built and doesn't leak a drop. The spill free design is very well done and would have a hard time to accidentally open. The vacuum insulation is amazing though. My coffee remained too hot to consume for at least 30 minutes and remained a satisfying temperature for the entire morning.