The Hydro Baltic features TempShield? insulation, a double-walled vacuum design that keeps cold foods cold and hot foods hot, with a durable 18/8 pro-grade stainless steel construction that is BPA-free and phthalate-free. It has a soft-grip lid that is easy to open and secure, making it perfect for quick refueling on the go. Just the right size for holding hot soups, chilled fruit, snacks, kids\' lunches, and office meals, it is small and compact enough to fit into a backpack or purse.