Stainless steel; Double-wall vacuum insulated, keeps liquids hot for up to 12 hours or cold for 30+ hours; Lid is uniquely designed with a patented removable agitator; Double snap top to prevent leaks; Flip up carry handle; Internal measurement markings; Won?t sweat and doesn?t absorb odors; Fits into any standard sized cup holder; 9"h x 3.25" dia.