his is a Durable plastic that is made for Resin Casting. Pieces pop out easily-May have a few water marks, but a thin coat of resin or resin spray will take care of that. This is a 4 cavity mold featuring Horror Theme Heart shapes Designed By Danette Mullen Each Heart is approx. 1 1/2" Jason Mask Heart Drippy Machette Heart Do not put in oven. Molded From Love 2016