Our 16 oz. Double-Wall Insulated Party Cup is made of durable polypropylene plastic. Safe to Use with Hot or Cold Beverages. Inner Shell Volume Indicator at 1, 5, 12, & 16 oz. Reusable, Recyclable, Handwash Only. Do Not Microwave. Made with FDA Approved Materials, BPA and Lead Free, CA Prop 65 Compliant and HR4040/CPSIA Certified. Made in the USA.