Climate Lock™ keeps contents hot up to 4 hours or iced up to 20 hours Chip-resistant Klean Coat™ powder coat finish (Brushed Stainless has no coating) 18/8 food grade stainless steel BPA Free Won't retain or impart flavors Slim design fits in most cup holders Includes splash proof Straw Lid with stainless steel & silicone straw Hand washing is recommended for all Insulated products Backed by the lifetime Strong as Steel guarantee