Glass Lunch Box, Transparent The Glass Lunch Box: Is made of 100% glass and is guaranteed to withstand temperatures of up to 350°C Unlike plastic or ordinary glass, glass will not leach chemicals into your food even after repeated usage or at high temperatures Unique airtight seal keeps odors out and freshness in Is 100% leak proof • Can be safely used in the microwave, oven, fridge, freezer and dishwasher Is harder and tougher than ordinary glass, and is explosion proof Is scratch resistant Non porous glass will not absorb masala stains or odors, so is perfect for Indian food Retains perfect clarity. Unlike regular soda lime glass, will not turn cloudy with repeated usage Usage Instructions and Care Do Use in electric oven, convection oven, microwave oven, fridge and freezer Pre grease your dish before pouring in food meant for baking Pre heat oven before use for best result Allow frozen dish to reach to warm a bit before putting it in the oven for reheating (however, straight from the fridge to the oven is ok) Allow hot dish with food to cool a bit before putting it into the freezer (putting a hot dish into the fridge, however, is ok) Wash with soap and a soft sponge, or in the dishwasher Wipe down bag with a damp cloth after use Wash bag in washing machine if necessary Don't Do not use over direct flame Do not allow the food to dry completely in the oven Do not put the hot dish on cold or wet surface Do not use abrasive cleaners or scourers to ensure scratch free surface Do not use the plastic lid in conventional oven or microwave oven.