Hydrojug Hydro Jug 40oz Traveler CreamCup Mug Drink Brand New. The mug is made of stainless steel and it is insulated to ensure your drink remains at the right temperature for longer. It comes with a lid and a straw for added convenience, and it has a handle that makes it easy to carry around. Stay hydrated wherever you go with our Hydro Jug Traveler Cream Mug. The mug is designed for adults and can contain up to 40 oz of hot or cold beverages.