Holds up to 20oz. Keeps drinks cold 24+ hours and hot 3+ hours. Triple insulation technology: double-walled, vacuum-sealed and copper-plated. Condensation free and nonbreakable. Constructed of 5mm 304-18/8 stainless steel. Fits most standard cup holders. Slip-free, scratch-free and noise-free silicone base. Includes BPA-free Flip + Sip Cap with straw and flex handle.