Vacuum flask

stainless steel, portable and large capacity, suitable for outdoor, car, home.
Portable straps, retractable, crossbody. Nylon material, wide pads, easy to carry, firm and practical.
One cover for two uses, press the switch design, one key press water, another comes with drinking small tea cup.
Super long insulation, skilled use of double-layer vacuum technology, effectively reduce heat transfer and improve insulation performance.