Nordic Polymer Days (NPD) and Nordic Rheology Conference (NRC) are annual meetings circulating among the Nordic countries. Both have a long history - in 2016 NPD is organized for the 53rd time and NRC for the 25th time. It has often been discussed among the organizers and participants of these events whether they could be organized at the same time, since both have had overlapping themes and audience. In 2016 this is going to happen. The combined NPD+NRC conference in Helsinki 30.5.-1.6. is for all those interested in biomaterials, polymer science and rheology. The meeting will be organized by the Society of Wood and Polymer Chemistry in Finland, the Nordic Rheology Society, Department of Chemistry, University of Helsinki, Åbo Akademi, VTT Technical Research Centre of Finland Ltd, Department of Forest Products Technology, Aalto University and Department of Biotechnology and Chemical Technology, Aalto University.