1 bag of pieces about 12-15" long, some pieces smaller, hollow inside. These are piece of woody plant, weedy evening primrose specifically, from plants that went to seed in fall 2020. The process of going to seed and naturally dying is somewhat similar to the process of leaves turning brown before being shed. They are from my yard and I don't use any pesticides/herbicides/chemical fertilizers. I use these in my own tanks and their effect is similar to other types of wood. They do not release a lot of tannins which could be positive or negative to you depending on your aesthetic.