A set of two nesting rectangular containers with capacity up to 900 ml, allowing different types of food to be divided to avoid cross-contamination of flavours, thanks to a handy lid. The lunch box can be stored in the refrigerator or freezer and can also be used to heat foods in the microwave with lid fitted, thanks to the innovative valve. It can be easily transported in your bag thanks to the airtight seal of the drip-proof lid.