Asian Hot & Cold Jug Thermo Tuff is a storage vessel. It helps to keep your liquid hot or cold for hours without spilling it. The flask has a spill-proof lid that ensures no leakage. It has a strong and durable body. It has a double wall that stops the heat loss. It is ideal for home, office, school and travel use. Its outer body and the inner jar is made out of good quality stainless steel and its middle layer is insulation with quality PUF.