TC Elegant Double Stainless Steel Vacuum Flask

Excellent Temperature Retention
The vacuum layer between the two walls greatly reduces heat transfer (by conduction, convection and even some radiation). That means hot drinks stay hot for many hours, and cold drinks stay cold much longer. 
•No Condensation / Safe Exterior
Because the outer wall is double-walled and insulated, the outside of the flask doesn’t sweat or get too hot (when holding hot contents). So it’s safe to touch, and no sticky condensation mess. 
•Durability and Long Lifespan
Stainless steel is strong, corrosion resistant, rust-resistant, and handles rough use better than glass or plastic. Thus the flask tends to last a long time. 
•Safe for Food & Drink
Food-grade stainless steel doesn’t leach toxic chemicals, no BPA, no weird tastes or odors. Also easy to clean and maintain hygiene. 
•Eco-Friendly / Cost Effective Over Time
Replacing single-use cups or plastic bottles with a good vacuum flask saves money and reduces waste. Even though initial cost might be higher, over time it’s more economical. 
•Versatility
These flasks work for a wide range of uses: keeping beverages hot or cold, for travel, hiking, office, kids, etc. Also various capacity / lid designs available. 
 

1 pc Double Stainless steel flask