Using double-wall insulation, the High Grade Stainless Steel Vacuum Flask 500ml maintains liquid temperature for up to 12 hours. SUS304 steel construction prevents metal leaching into drinks. With a press-button lid, the 500ml capacity stays sealed against leaks.
Key Features
- Double-wall Insulation: Thermal barrier holds heat for 6 to 12 hours. Coffee stays hot throughout the day.
- SUS304 Stainless Steel: Food-grade internal metal resists corrosion and rust. Prevents metallic aftertaste in drinks.
- Press-button Lid: Mechanical seal blocks liquid exit and prevents spills. Keeps contents secure through road dust.
- BPA-free Materials: Plastic components contain no harmful chemicals or toxins. Eliminates toxin exposure during storage.
- Powder-coated Exterior: Textured surface layer improves hand grip and stability. Reduces dropping risk when wet.
Frequently Asked Questions
How long does a 500ml vacuum flask stay hot?
The double-wall vacuum seal retains heat for 12 hours. External ambient temperature affects actual performance.
Is 304 stainless steel safe for hot water?
SUS304 grade steel resists oxidation at high temperatures. It releases no chemicals into boiling water.
