The EMS Press "Green Compliant" Flexible Journals Package is a five journal online package made up of two mandatory titles - Commentarii Mathematici Helvetici and Journal of the European Mathematical Society - plus a choice of three other titles from their portfolio. The price is fixed for three years with no increases, and annual opt outs are allowed. EMS Press does not charge fees to publish and is offering two potential routes to open access; a green compliant option for all funded authors and a "Subscribe to Open" (S2O) programme for 10 of its journals from 2021. Please see the website for more details.