You get one 5 pound bag of pasteurized organic mushroom casing mix. This is a 100% animal-free product. Organic recipe is made from premium coco coir pith and fibers, vermiculite , RO well water, worm castings, food grade minerals. This item is vacuum sealed to preserve freshness and shelf life. The vacuum bag also adds another layer of protection during shipment. Product has a One Year Shelf Life when left sealed in the vacuum bag. We use this casing mix with our grain jars and our bfr jars. (sold separately) Get a copy of our Free Monotub & Grow Guide at the Shroomability website.