It's a natural pet bedding made from reclaimed pulp (a little bit crushed by hand) with some natural moss. I bought it in Walmart. They love it because they can hide underneath before molting, but it's not very good for humidity because it's very dry. Unfortunatly, cause moss, it doesn't absorb odor as I would like. At least, they don't eat many fibers. At this time, I'm trying coco substrate, but my female swallow it when they are eating, so I have to change another time