Double-Wall Vacuum Insulated Flask

A 1-litre thermal flask built with dual-layer stainless steel walls separated by a high-efficiency vacuum gap. Height approx. 27 cm, diameter approx. 8.5 cm, weight approx. 420 g. The wide-mouth design (5.5 cm opening) supports straightforward pouring, direct ice addition, and full interior visibility during cleaning. Vacuum insulation slows thermal energy transfer, enabling hot drinks to retain warmth and cold drinks to stay chilled over extended periods — ideal for UK users managing long commutes, full office days, or active weekends. The screw-top lid creates a dependable leakproof seal, allowing safe transport in bags or cup holders. Intended for repeated daily use; care involves hand washing with warm soapy water and full air drying to sustain performance and finish quality.