※If the product does not indicate a quantity in the product name, the product is sold as a single item. General glassware (heat-resistant temperature difference of about 140°F (60°C): Please wash with mild detergent before using. Do not use in microwave, open flame, or oven. Please do not subject to sudden temperature changes. Do not expose sudden physical impact (such as pouring cold drinks out of the dishwasher, placing hot product in a wet dish towel). Do not use abrasive sponges, metal scrubbers, cleansers, etc. Do not stack products that are not stackable.