Mini size: This compact and portable 150ml thermos flask is a great alternative to disposable water cups when you're on the go Leak-proof design: The bottle cap is equipped with a silicone sealing ring, providing 360-degree leak protection. Carry the small coffee flask confidently in your bag without worrying about spills or leaks Insulation for hours: With its double-wall vacuum insulation design, this milk flask can maintain the temperature of liquids for up to 4 hours, ensuring you can enjoy both hot and cold beverages anytime Tea infuser design: The built-in tea infuser allows this mini water bottle to not only hold water but also make it easy to brew tea or infuse fruits, helping you enjoy refreshing and flavorful drinks anytime Good material: Made of 304 stainless steel, this small thermos is built to last and ensures durability and safety for everyday use