Stainless Steel Outer And Inner | Stainless Steel Tumbler With Handle | Double Wall Construction For Insulation Of Hot Or Cold Liquids | Screw-On, Spill-Resistant Lid with Straw Hole and 12" Straw | Keeps Drinks Cold Up To 24 Hours And Hot Up To 8 Hours | Vacuum Insulated | Meets FDA Requirements | BPA Free | Hand Wash Recommended