Superior Temperature Control: The vacuum insulation efficiently halts heat conduction and convection, keeping drinks hot for up to 12 hours or cold for up to 24 hours.
Pure Taste: Unlike traditional stainless steel, the glass interior ensures zero chemical leaching and no lingering flavors or odors from previous beverages.
Material & Safety: The inner container is made from premium, thermal-shock-resistant borosilicate glass, while the outer casing is typically constructed of a durable material plastic with a protective silicone sleeve to prevent breakage.
Leak-Proof Design: These flasks typically include airtight, screw-top lids with silicone seals to prevent accidental spills and drips in your bag.
