Made With rPET Material. Made From Post Consumer Recycled Materials. Recycled Polyester (rPET) is Obtained By Melting Down Existing Plastic Bottles And Other Material Sources To Create New Polyester Fiber. PP And Stainless Steel Lid. Lid, O-Ring And Wrist Strap Are Not rPET. Screw On, Spill-Resistant Lid. Easy Carry Strap. Wide Mouth Opening. Meets FDA Requirements. BPA Free. Hand Wash Recommended.