Typically made of stainless steel with a vacuum-sealed double-wall construction, it effectively minimizes heat transfer. Milton flasks are widely used for storing beverages like tea, coffee, or water, making them ideal for travel, work, or home use. They come in various sizes and designs, often featuring leak-proof lids and easy-pour mechanisms. Known for their durability and efficiency, Milton flasks are a popular choice for maintaining the desired temperature of drinks throughout the day.