I am no expert however in my understanding the resin is derived from vegetable oil. Which would be vegan. Most plastics are petroleum based and that oil is made up of all organic material that was in the area at the time it was trapped underground. Could be dinosaurs, fish, or any animal or plant that was in the region. Hope that puts some insight in how unvegan most plastics are. This has always been a point of concern that I am surprised more vegans don't address.