Description Experience optimal insulation with our glass inner replacement that fits most hot water flask and vacuum flask insert designs. The sturdy glass bottle insert maintains beverage temperatures for hours, making it perfect for keeping tea, coffee, or water warm during daily routines. The small diameter allows easy pouring and quick cleaning, ideal for thermal jug insert needs. Features -Color:Silver -Material:Glass -Size:18.00X12.00X12.00cm/7.07X4.72X4.72in -Capacity:1L -Inner Diameter:4.2cm -Outer Diameter: 5.5cm -Fine insulation: the glass inner replacement in this vacuum flask insert offers excellent thermal retention, keeping your beverages hot or cold for extended periods, perfect for any thermal flask liner needs -Versatile compatibility: designed as a universal replacement glass liner, this insulated jug insert fits most hot water bottles and warm water jugs, making it easy to rejuvenate your existing containers -Vacuum Glass Liner: made with a practical glass vacuum insert, our hot water jug liner assures a clean beverage experience while resisting stains and flavors over time -Easy pour and fill: the small mouth design of this flask inner liner enables precise pouring and easy filling, reducing spills and making the water bottle glass liner simple to use for daily hydration -Effortless cleaning: thanks to the kettle inner liners smooth glass surface, maintaining hygiene is a breeze, allowing for quick rinsing and making the insulated glass bottle ideal for repeated usePackage list: 1 x Thermal Flask Liner