PVC foam board, white and black as at the pictures. Composition: poly vinyl chloride resin - cas# 9002-86-2, WT% >70%, calcium carbonate -1317-65-3, WT% < 20%, titanium dioxide cas# 13463-67-7, cas# < 10%, proprietary additives cas# mixture <20%. More information, DTS and pictures via what's up. Price to be determined