Vacuum insulated double wall stainless steel tumbler  Powder coated finish. Stainless steel rim accent. Keeps liquids warm for up to 12 hours  Keeps liquids cold for up to 24 hours. Hand wash only. Stainless steel straw and flip top lid combo - use with or without the straw. Tumbler itself is dishwasher safe. The imprint however may be compromised by repetitive dishwasher cleaning. Please note: The imprint will take on the texture of the powder coated finish. As a result, some fine lines and edges may not appear as crisp.