Extract from BioPack website.

"Our BioCups are produced from 280GSM heavy-duty board for a premium quality product with superior stability, lid fit and insulation and printed using soy or water based inks. All our paper is sourced responsibly from managed plantations and coated with Ingeo™, an innovative corn-based bioplastic rather than conventional petroleum-based plastic. All components of our cups are made from rapidly renewable resources and are certified carbon neutral. PLEASE NOTE: We are unable to guarantee which prints will be in each carton. Variations are random. "