Heat-resistant glass Maximum temperature differential: 120℃/248℉ Microwave safe and dishwasher safe Use only for its intended purposes. Do not use on a direct fire. Do not overheat in the microwave or heat without water. Wash with care. Do not use abrasive cleansers or steel wool. Sudden temperature change may break or shatter the product. While the glass is hot, do not pour cold liquids into it and do not place it to on a wet cloth or in a wet sink. Product size and shape varies in each item due to manufacturing process. [Outer lid] Stainless steel , Silicone [Inner lid, Filter] Polypropylene, Polyethylene terephthalate Upper temperature tolerance: 90℃/194℉ Dishwasher safe Made in China Do not use in a microwave. Do not place near open flames. Twist and close the lid tightly before pouring. Keep it horizontally as the container is not completely sealed. Do not hold by the lid when carrying, as the container might fall and break. The filter may become clogged due to the adhesion of coffee oil. To clean the filter, soak in warm water and then wash with neutral detergent. When reinserting the filter in the jug filled with water, sink it slowly as water may overflow due to surface tension around the mesh. To prevent rust, immediately wash and dry well after use. Store it away from other metals.