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These are definitely very lightweight and handy for events where we need to move the warmers a distance (the wheels are especially nice) but I can tell we are going to have to treat these VERY gently, as they are basically styrofoam, and metal pans are going to rip them up really fast. Maybe if the inside was lined with something more sturdy I would buy more of these, but I will have to reserve them for special occasions where a light warmer is really necessary. Cambros for daily use, these only once in a while.