Bonjour Tiff Box is made from food grade materials and are very safe to use for kids and adults. They are 100% BPA free and Phthalate free.Bonjour Tiff Box has 6 compartments but can be easily converted into 4 with a removable inner tray. Bonjour Tiff Box is leak proof and designed to hold thicker liquids but is not watertight so avoid use of juice/oils/water etc.Bonjour recommends you to never overfill the compartments and leave an adequate gap of at least 5mm from the top line. Bonjour recommends that the Tiff Box is washed by hand however it may be used in the dishwasher (top rack only).