I am about to order another one for myself, a small one for my granddaughter, a large one for my sisters coffee which is always going cold. IF YOU ARE DOING YOUR XMAS SHOPPING EARLY THIS IS AN AWESOME CHOICE THEY WILL USE EVERY DAY. Just know the large one holds one and one half liters that is one and one half bottles of the green Perrier bubbly water bottles. It does really keep stuff hot and cold for the advertised time zones. Do no waste your time, this Highly recommended product cannot be found for less $ anywhere ....I already looked (hey I'm retired and have nothing else to do all day).