This kd vacuum flaskâ  is great for hot coffee, tea, and other cold liquids. it has a double wall vacuum construction and is easy to hold and pour. it keeps liquids hot/cold for 6 hours. it has a wide mouth design for easy cleaning and added versatility. fits perfectly well inside a bag. a flask that provide safe strain-resistantâ  and no odor. capacity 2l and 2.5l. leak proof flask and bpa- free.