Made of top plastic material intended for medical and pharmaceutical use; excellent for hygienically stored food in the refrigerator. The material used is neutral and does not affect the quality of food even in prolonged storage. Comes with a double-sided bottom with protrusions against moisture and a raised rim against leaking. The containers are stackable to save space in the refrigerator. Comes with spare flaps for an individual choice of colour. Dishwasher safe. 3-year warranty.