Double walled freezer mug,Includes non-toxic clear freezing gel,Freeze over and over again,Place in freezer upside down,Keep your beverage cold,Do not use in microwave,Hand wash only,Holds up to 400 ml. (13.5 oz.),Instructions included,BPA free (Bisphenol A) and FDA Compliant,CTFA Microbiology certified,Acrylic