I bought this as a gift for my wife. She loves coffee, but tends to get lost in work. By the time she remembers she has coffee, it’s usually cold. Ember has completely solved this problem. She gets so excited every time she remembers her usually cold coffee is piping hot. The only thing preventing us from buying more products is (did I say she LOVES coffee) the small cup size. We need a 24oz option. At the very least a 20oz option.