Do not place in the freezer. It may rupture. / When placing hot food inside, let it cool before closing the lid since heat or oil may cause the lid to warp.Do not use in microwave.Wash with dish detergent before first usage.Do not use a scrub brush or polishing powder with this product.Do not wash with dishwashers or dish dryers.It may retain the color or odor of food.Immediately discontinue use if the product becomes deformed or damaged.Keep away from fire and other sources of heat.