These grow bags are used in the production of mushrooms, are are designed to hold inoculated substrate. You simply fill the bags with substrate, sterilize, inoculate, incubate, then cut a hole in the bag when it's time to fruit. The mushrooms will grow out of the side of the bag and you will get a high quality crop.
They are autoclavable and resistant to tearing. All mushroom grow bags have a natural failure rate, as we have found these bags to have the lowest rates of all the bags we've used.
Our bags are sold in lots of 10 or 100.