Tsunami of plastic wastes, death of marine animals due to consumption of plastic bags, harmful microplastics found on the surface of disposable water bottles etc. These are some of the reasons why our world is encouraging the reduce of disposable plastic products and also choosing reusable thermal flasks and water bottles....

Humans can be pretty contrary because when it is cold, we want to warm ourselves but when it is hot, we want to cool down ourselves. That is because we are warm-blooded creatures who need to keep our body temperatures more or less at 37°C. Thermal flask is also a...