Set of 6 colorful magnets made from 100% fiber waste called polylactic acid, which is made from fermented plant starch such as corn, beets or sugar cane. It is 100% biodegradable, not water soluble, and contains no plastic. -The PLA is formed around the magnets, no toxic glue was used to secure them and they won’t come out Companion Tools: Maker's Board Kraft or Gray, Ruler & Gauge Set