The small size and narrow design is it's largest feature. Easy to carry, lightweight and fits right in to your pockets or a small handbag. It is only the necessary and nothing more. With it's 180 ml it is the (slightly larger) one good cup of coffee or any type of cold beverages. Keeps your drink hot or cold for 6 hours. The design is Japanese simplicity when it's best and the Poketle +6 comes in 4 great colours.