The product is a NEW Starbucks 2021 50th Anniversary 20oz Stainless steel Siren Vacuum Insulated tumbler featuring the Siren Logo character family and a twist lid. It is designed to keep cold beverages cold for up to 8 hours and hot beverages hot for the same duration, thanks to its insulated stainless steel material. With a stylish silver color and a capacity of 20 oz, this limited edition tumbler is ideal for those looking for a high-quality beverage container that can maintain their drink's temperature while on the go.