The shapely contours of the Impulse thermal mug ensure that it sits securely in the hand and has the elegance of a decanter. The locking mechanism unclasps at the touch of a button, while its all-round opening enables drinking at any point along the lid. The screw-top lid can be disassembled for cleaning and keeps the thermal mug absolutely watertight, even when turned upside down. A double-walled stainless steel thermal core keeps drinks warm or cold for a long time and allows the mug to be cleaned in the dishwasher.