Signoraware Director Glass Lunch Box Set with Bag, 310ml/13cm, 3-Pieces, Transparent Style:Director   For cleaning and storage, wash and rinse SignoraWare products with liquid soap and lukewarm water. Store the material without seal to keep them fresh. Removing stains : Use baking soda paste on stains for reducing stains and stickiness. Products with round seal are liquid tight and can be kept in any position. Keep containers with other types of seals in upright position. Cool all the hot food before storing in the containers to retain the food value and liquid tightness.