Triple Insulated Recycled Stainless Steel Outer And Copper Inner. Powder Coated Finish. Double Wall Construction For Insulation Of Hot Or Cold Liquids. Screw On, Spill-Resistant Lid With Easy Carry Handle. Push Top Button To Release And Open The Lid. Press Down To Lock Back In Place. Dual Wide Mouth Openings. Non-Slip Base. Features Signature Cutter & Buck® Logo. Meets FDA Requirements. BPA Free. Hand Wash Recommended.