Wash with dish detergent before first usage. / Due to the characteristics of the product, the edges are sharp, so be careful when handling them. / Do not use a scrub brush or polishing powder with this product. / Do not use over an open flame or in an oven. / Do not use dishwashers, dish dryers or microwave ovens. / Do not leave the product with salt attached. / Do not soak in water or dishwashing detergent. / Do not drop this product or hit it on other objects. / Do not leave the product wet. / Use and keep out of reach of infants. / 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. / Do not fill with lactobacillus drinks, fruit drinks, sports drinks or other acidic drinks. / Do not store filled with drinks for extended periods of time. / Do not fill with miso soup, other soup or other salty food.