Love my Contigo!  My first interaction with a Contigo is finding one in the road that had fully survived a fall from a vehicle on the road leaving a nearby campsite (see picture). As soon as I picked it up and tried the comfortable spring-loaded valve setup that could be opened for dishwasher cleaning, I was sold!   Bought my own shortly thereafter.  30 Oz. Unit is narrow enough to fit in my cars cup holder and keeps coffee warm for hours.  Highly recommended!