Promotional Hydro Flask double walled travel mug (473ml) Double-walled travel mug from the Hydro Flask brand. This tumbler is made of high-quality stainless steel and finished with an attractive powder coating. The sealable lid has a sealable drinking opening, prevents spills and ensures that you can safely take the tumbler with you. This insulated tumbler fits comfortably in your hand, is easy to fill and makes drinking on the go comfortable. The unique TempShield® double-wall vacuum insulation keeps cold drinks cool for up to 24 hours and hot drinks warm for up to 12 hours. The slim design fits in most cup holders. Designed for everyday use and easy to carry. Ideal for in the car, on the train or at the office. Capacity 473 ml. Dishwasher-safe. Washing by hand is recommended to preserve the print.