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.Do not use in microwave.Do not use in freezer.Do not fill with boiling water.Do not fill with carbonated drinks, alcohol or dry ice.Immediately discontinue use if the product becomes deformed or damaged.Keep away from fire and other sources of heat.Do not use this product for purposes other than its intended purposes.