Large Capacity and Long-lasting Insulation: With a generous 1.5L capacity, this vacuum flask meets the needs of longer periods or larger groups. Featuring double-wall vacuum insulation technology, it sustains temperatures for up to 48 hours, ensuring your beverages stay at the ideal temperature.Practical Lid Design: Featuring a silicone seal and bouncing lid for easy sealing and pouring, the vacuum flask also includes an outer cup lid, serving as an additional drinking vessel, eliminating the need to carry extra cups when on the go.Safe and Durable Materials: The stainless steel inner liner of this vacuum flask is food-grade, providing a safe storage environment for water and beverages. The outer case, made of durable PP material, is resistant to deformation, rust, and corrosion, ensuring long-term reliability.Convenient Size and Carrying Design: Measuring about 33x10cm/12.99x3.94inch, this vacuum flask is space-efficient and easy to store. Equipped with a handle, it's easy to pour and carry, offering great convenience.Versatile for Outdoor Activities: Suitable for winter outdoor activities, hiking, camping, picnics, outdoor adventures, fishing, mountain climbing, and more, this vacuum flask is practical and adaptable to diverse scenarios.