Stainless Steel Insulated Mug Portable Vacuum Flask with Filter

Description:Vacuum Insulation TechnologyThis flask has a double walled exterior with a vacuum between the walls. This means your drink has no medium for the heat or cold to transfer through. Your beverage will truly stay as hot or cold as long as possible. Retire your coasters and koozies. Even filled with ice or boiling water, the bottle will never sweat or get hot to the touch!Copper Coated InsulationThe exterior of the inner wall, in the vacuum sealed area, has been dipped in copper for added insulation. Copper reduces the transfer of temperature, adding even more insulation to your cup. This technology gives the best insulation of any tumbler on the market!18/8 Stainless SteelThe insulated flasks are made of high quality food grade 18/8 stainless steel. Whether you are drinking water, beer or even coffee, this flask will not retain the taste or smell of any liquid. This reusable flask will help keep plastic cups and bottles out of our landfills.Features:1. Exterior is made from high quality food grade 304stainless steel, heat-resistant, anti-corrosion, anti fouling,no nasty chemicals, no harmful toxics, you can be 100%sure you and your family are drinking the cleanest,safest drinks possible.
2. Double wall insulation maintains hot or cold temperatureof contents for a long time. Cold liquids stay cold for 10 hours without any condensation on the outside of thebottle. Hot liquids stay hot for 8 hours.
3. Flip lid with extra safety lock which will preventaccidental spillage. Perfect for water, coffee, tea, milk, etc.
4. Business style for man, woman, office, travelling, gym, home etc.