Really nice to keep things warm but product didn’t last very long. In all honesty a family member washed it in the dishwasher with the clip closed and water left inside, so that could have led to the seal deteriorating so quickly (hot water started leaking from it fairly quickly- within a month of purchase). So if you make sure to leave the bowl empty of water and the seal clip open in the top rack, maybe it will last longer but I don’t know how long. Good idea but maybe need a new concept.During optimal use, it doesn’t keep it too warm for too long