The principle is the same temperature and hot water bottle?
Capacity is larger, the thermos is generally is glass products, used in homes, offices and other fixed places, heat preservation effect is good, price is cheap.
Temperature generally is stainless steel, capacity is small, sturdy and durable, easy to carry, but the heat preservation effect is less, the price is higher;
Temperature and hot water bottle is the same. Temperature generally is stainless steel, capacity is small, strong and durable