Description: 【Quality material】: Crafted from quality stainless steel, this portable bottle warmer is designed to be sturdy and resistant to wear and tear, ensuring it remains sturdy and deformed even with repeated use over time 【User friendly design】: The electric insulation kettle features an easy to use temperature adjustment setting with a display, allowing for long time heat retention and effortless use 【Versatile functionality】: With a multifunctional design, this insulated tumbler boasts a generous 450ml capacity and leakproof construction, making it exceptionally convenient for outdoor use 【Compact and portable size】: Measuring 8 cmx26 cm/3.15 inchx10.24 inch, the outdoor water cup is compactly structured and lightweight, making it easy to carry around. It also serves as an ideal gift for family or friends 【Wide range of applications】: Fast heating cup is perfectly suited for various scenarios such as traveling, milk warming, baby feeding, daily use, camping, picnics, or any on the go activities Specification: Material: Stainless Steel Size Chart: 8cmx26cm/3.15inchx10.24inch Package Includes: 1 Portable Bottle Warmer, 1 USB Cable Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.