Mini size: This compact and portable 150ml thermos flask is the good 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 leak-proofing. 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 users can enjoy both hot and cold beverages anytime^Tea infuser design: The unique tea infuser design allows this mini water bottle to not only hold water but also facilitates easy brewing of tea or infusing fruits, enabling users to enjoy refreshing and flavorful drinks at any time^Good material: Small flask is made of 304 stainless steel, this small thermos is built to last and ensures durability and safety for everyday use