Never be prevented from enjoying your coffee drink on the go with this dynamic mug. Its smooth shape allows it to comfortably fit into most drink holders. It is made of an outer steel layer and an inner plastic liner. This double wall construction allows for insulation of the hot or cold contents of this cup. The cover of this cup is spill-resistant flip-top lid with its excellent screw on cover. It meets FDA requirement and is BPA free. HAnd wash is also recommended for this item