I know we specialize in pet products that have been tried and tested on our menagerie... But you may have also noticed some of us (me) are obsessed with cute cat things... I don't have a problem! (I have a problem)
Not much to say here, these are ceramic and have an optional lid (that I promptly lost). If you're looking for something to retain heat/cold for hours, see our thermos...es... Thermoses? Thermii?