Recycled Stainless Steel Outer And Inner. Powder Coated Finish. Double Wall Construction For Insulation Of Hot Or Cold Liquids. Includes 2 Lids. 1 Screw On, Spill-Resistant Sip Through Lid And 1 Screw On, Spill-Resistant Sip Top Lid. Push Button To Pop Lid On Sip Though Lid. Easy Carry Handle On Both Lids. Meets FDA Requirements. BPA Free. Hand Wash Recommended.