OmieBox is the very first insulated bento box that stores hot and cold food in one box. It has 2 temperature zones , your can keep your lunch warm while veggies and fruits stay cool! OmieBox is stylist and unique. It has a built-in thermos food jar that will keep lunch warm for up to 4 hours. It uses two types of insulation, Air insulation, vacuum insulation plus an airtight seal. It keeps lunch fresh and yummy, your lunch is always served at the perfect temperature.