This vacuum flask is uniquely designed to stand out. It is sturdily constructed from stainless steel to ensure a rust-free use and durability. The cup is also made of stainless steel to prevent breakage and leakage. It has a capacity of either 0.35liters (350ml) or 0.5liters (500ml), and keeps your tea, coffee and other beverages warm for more than 12 hours. This flask is also useful for storing cold water and other cold drinks for more than 24 hours. Its sleek and lightweight design makes it ideal for schools, offices and even long trips and excursions. It is strong, durable and designed to keep your drink hot or cold for the longest time. The leak-proof lid cover is well designed as a cup which easy to open and close. It is attractive and easy to clean. The outer material is scratch-resistant and rust-free.