The Stanley x Calia 30 oz Flowstate Quencher H2.0 Tumbler in Black Serpent is a three-piece set that includes a round, medium-sized tumbler, perfect for both hot and cold beverages. This tumbler keeps drinks cold for 9 hours and iced for 40 hours, making it ideal for all occasions. The tumbler features an embossed design, spill-proof lid with a drink-through opening, double-walled insulation, and is made of stainless steel. With a capacity of 30 oz, this modern and stylish tumbler is perfect for teens, unisex adults, and unisex kids alike, and is machine washable for easy cleaning.