DOUBLE WALLED STAINLESS STEEL VACUUM INSULATION - Made from stainless steel with vacuum insulation system, locking in temperature to keep beverages warm for 24 hours and cold for 36 hours. Safe and non-toxic, and high-grade steel. EASY TO USE & CLEAN! - Royalford 1L Vacuum Flask is designed with a large mouth opening for easy filling with your chosen beverage. It’s comfortable to handle design is made for a single hand pouring with a simple push-button release. COMFORTABLE HANDLE - This Vacuum Flask has a simple yet very practical high grip handle which will easily let you carry while walking for an outing. HIGHLY EFFICIENT - This Royalford Vacuum Flask is built up with a highly durable material that is capable enough to hold its temperature and taste for a longer time. WIDE MOUTH, HIGH CAPACITY - Its large mouth opening makes filling and cleaning easy, it can even be used with ice for extra cold refreshment. Its outer body stays cool to the touch when filled with hot liquids and is condensation-free with cold beverages. It comes with a large capacity of 1 liter, ideal for family outings, or with friends.