Both the aluminum and paper are shielded by a layer of BPA-cost-free plastic film to shield the integrity with the bottle) For your new bottle or carton, single use, or short use packaging of any form tends to not defeat reusable bottles above more time repeated use lifecycles and timelines. https://dairycartonsustainability.fashion.blog/2024/12/10/embracing-sustainable-hydration-with-eco-friendly-packaging-solutions/