18/8 Stainless Steel inside and out, Vacuum insulation keeps drinks hot cold and fresh for hours, Electro polished interior ensures clean tasting, The sipping lid has a slide tab closure that prevents splashing; slide-tab disengages for quick easy cleanup, Fits most vehicle drink holders, Dimensions: 5, 1"" x 2, 6"" x 6, 8"", SKU: TIMO006