The Stanley x Calia 30 oz Flowstate Quencher H2.0 Tumbler in Black Serpent is a modern tumbler set perfect for all occasions. With an embossed design and double-walled insulation, this tumbler can keep beverages hot for 5 hours and iced for 40 hours. Made of stainless steel with a 30 oz capacity, it features a spill-proof lid, travel mug handle, and comes with a straw. Suitable for teens, unisex adults, and unisex kids, this tumbler is machine washable and dishwasher safe, making it a convenient and stylish choice for staying hydrated on the go.