Which 7?

Zweikell water bottles are made from copolyester plastic. The recycling code is 7. The numbers within the triangle arrows located underneath the products are grouping codes for recycling. They do not determine whether the products are healthy. Our products have been analyzed, and you can review the accredited institution reports showing they do not contain toxic substances in the product images. Copolyester materials do not contain BPA A and BPA B and are suitable for food contact. The raw material is called TRITAN because TRITAN is the most widely used brand among copolyester raw materials.