[Tumbler] Materials: 18-8 Stainless steel (powder coating), TPE. [Lid, Spout] Materials: Polypropylene, Silicone. Upper temperature tolerance: 100℃/212℉. Keep drinks cold (6℃/43℉) for 6 hours. For maximum insulation efficiency, pre-cool the tumbler prior to use by filling in a bit of cold water for 1-2 mins. BPA Free. Made in China. This is a tumbler for cold drinks. Do not use in a microwave. Do not use in a dishwasher. Do not place near open flames. Do not put in boiling water. Do not drop or subject the product to strong impact as it may cause breakage or leakage. Be careful with infants as their mischiefs may cause accidental ingestion or injury. Do not put hot drinks as it may cause scalds. Do not put dry ice or carbonated beverage as it may expand and cause breakage.