.: Material: 18/8 food grade stainless steel .: Colors on the product might appear less bright than on the mockup, for higher color fidelity we recommend oversaturating your colors or overall image. .: Seamless vacuum-insulated double-wall construction .: Clear, BPA-free press-on lid with slide closure .: Keeps liquids cold for 24 hours & hot for 12 hours .: Hand wash only