If you simply enjoy having an extra cup of hot tea or coffee at work or spending a lot of time outdoors, then you might be interested in how to choose a good vacuum flask. As vacuum flask supplier in Thailand, UDesignconcept always ensures the quality of the vacuum flasks. All the vacuum flasks designed with double wall stainless steel vacuum insulation to keep the drink hot or cold for long hours. The vacuum flask perfect for traveling or use at the office, gym, school, camping, hiking in Thailand or other countries. There are quite a few different types of vacuum flask which have been designed for different purposes. Before you purchase, you might need to consider on the cost, capacity, material, heat retention and etc.