Vacuum Flask Stem

Capacity & Weight: Lightweight at approximately 200g with a 0.5L capacity, designed to be similar in weight to a smartphone. Superior Insulation: Achieves excellent heat retention (73℃ or higher for 6 hours) and cold retention (7℃ or lower for 6 hours). Advanced Insulation Technology: Features reduced heat transfer through a smaller contact area between the inner and outer bottles, as well as a copper coating on the inner wall of the vacuum section to prevent heat escape. Odor & Dirt Resistant Interior: The interior is electropolished, making it resistant to odors and dirt, suitable for aromatic beverages like coffee or flavored tea. Materials: Constructed from stainless steel (body), with polypropylene (lid, stopper), and silicone rubber (lid, stopper). Dimensions: Approximately W70mm × D70mm × H225mm (mouth diameter approx. 45mm). Care: Not suitable for microwave or dishwasher use. The Rivers Vacuum Flask Stem STD is a highly portable and efficient stainless st