It's simple, just pick and mix away and keep it all nicely separated! The bento box divides the lunch box up into different sections. With the two seperate parts the Bento will keep everything lovely and fresh in your lunch box. Would you rather 'just' have four sandwiches? Take out the Bento and you will have plenty of space! Needless to say the bento and the lunch box are both dishwasher safe.•Dishwasher safe•Lunchbox fits 4 sandwiches•Bento box included•Suitable for contact with food•0% BPA•Made in Holland!