A tough 400ml leak/spill proof mug that will keep your beverage of choice hot or cold for hours. Made from stainless steel with a double wall insulated construction & then powder coated to give it a nice grippy non-slip finish. The easy to use click & pour lid system means your drink wont end up in your lap & the tapered design fits just about all cup holders. We have tried several similar products & have stuck with this one; why? Because it just works! Stainless Steel construction Powder coated for increased grip & durability Silicone sealed click & pour lid system Will fit most cup holders