Top Shelf Club | Stainless Steel Commuter Thermos Mug (16 Ounce) Vacuum Insulated 8 Hour Travel Bottle Cup for Hot or Cold Coffee, Tea & Water [Black] DOUBLE WALL INSULATION - This stainless steel thermos mug features innovative double-wall vacuum insulation technology, which not only locks in temperature (keeping beverages hot for up to 8 hours, or cold for up to 12) but also preserves flavor so your drink of choice still tastes just as good as when you made it. WIDE OPENING - Perfect for keeping a drink cool on a hot day, the wide mouth of this thermos bottle can accommodate full-sized ice cubes, which makes filling it up fast and easy. The spout-type drink opening is another excellent feature; no more fiddly unscrewing with two hands to take a sip! LEAKPROOF DESIGN - The leakproof design works as a great failsafe: the lid of this travel mug opens with a push button, and locks closed again so you don't need to worry about spillages. No matter how hot the liquid, the outside of this thermos cup will remain cool to the touch, and is condensation free when storing cold liquids. DURABLE STAINLESS - Coffee, tea and water alike present no challenges - the durable, sanitary 18/8 stainless steel interior and exterior look great and are quick and easy to clean by hand with a bottle brush or similar, polishing up in no time at all. Not dishwasher safe. LIGHTWEIGHT & COMPACT - Featuring a light and compact design for easy carrying and storage, this commuter ready travel mug lives up to it's name: it will fit most automobile drink holders and can be held easily in one hand. It takes up as little space as possible, while maximizing capacity at a little over 16 oz.