Food Grade Clear BPA Free Tritan CoPolyester Thick Plastic Lid - Tritan CoPolyester : Highest Food Safety Plastic on the Market calledTritan CoPolyester(Link to Material Safety Information). Tritan plastic is used in hundreds of food contact products around the world, including water bottles, blenders and food storage containers. To ensure the safety of Tritan and address concerns about plastic, Eastman conducted extensive testing over many years using well-recognized scientific methods. Accredited universities and independent third-party labs tested Tritan, and the results overwhelmingly demonstrate that it is safe and, in separate studies, free of bisphenol A (BPA) and bisphenol S (BPS). Tritan plastic also is free of estrogenic activity (EA) and androgenic activity (AA). Tritan by Eastman Chemical Company is the cream of the crop when it comes to plastic food safety and durability. Lid is 3.8mm thick industrial strength crystal clear see-through material gives the product a high quality Industrial Strength Feel and it is harder than Polycarbonate. This is truly the hardest plastic on the market. . Watch this Video called (Run Over Tough)where a Car Runs over the Tritan Plastic and it does not break.