This Thermos Hammertone ThermoCafe Flask has double wall insulation which will retain hot and cold temperatures with ease. It is cool to touch when containing hot liquids and sweat-proof with cold liquids. It features a twist and pour stopper allowing you to pour without removing the stopper for ease and safety. The insulated lid doubles as a cup so you can sit and pour a drink any where. The flask is hardwearing due to stainless steel interior and exterior.