mushroom growing bags,autoclave bags with filter patch,CO2 Cultivator Bag :open 15cmx50cm,fold 8cm X 50cm typically for 3-6 pounds block,0.2 Micrometre filter patch,Heavy duty 2.5 mil polypropylene Sealable, Autoclavable and Durable Easily grow your own mushrooms in bulk 100% sterilized premium mushroom growing substrate Fortified with all necessary Excellent Breathable Filterability - Mushroom grow bags with 0.2 Micrometre Filter allows free exchange of gas while preventing the entry of pollutants. Grow like a pro mushroom growers around the globe use these bags to dramatically reduce space needed to grow or spawn mushrooms when compared to trays, tubs. Wide Application - Multi-use for inoculation of clone oyster mushrooms, bamboo fungus Ganoderma mushroom, and more. they can be also applied for spawn bags and sawdust fruiting blocks. Great for school projects, hobbies, and even professional mushroom growers, farmers, mushroom cultivation.<br><br>Colour:As Shown Material:Plastic<br><br>Package Contents: 50 Count X Mushroom Bags