Designed for indoor use, your image gets printed onto one of our premium canvases and then stretched on a wooden frame. A combination of quality and durability, these hangings come with a lifelong color guarantee; there's significant confidence in their withstanding the test of time. .: High image quality and detail .: For indoor use. This means that faint horizontal lines might be visible on the final product. .: Double wall insulation .: Material: Stainless steel .: Fits perfectly in car cup holder .: Spill-resistant sliding lid with a rubber gasket to prevent leaks