OVERVIEW: -100% New and high quaity. - Autoclave bags with filter patch: 150x350mm, 150x500mm, 180x350mm, 180x500mm, 250x500mm, 320x450mm, 320x500m, 320x650mm, 390x500mm, 390x600mm, 390x650mm, 390x800mm, total 12 sizes are available. 0.5 micron filter patch,Heavy duty PVC Sealable, Autoclavable and Durable Easily grow your own mushrooms in bulk 100% sterilized premium mushroom growing substrate Fortified with all neceary vitamin's and minerals Moisture content guaranteed and ph balanced Works perfectly with fully colonized spawn. - Edible species breathable bag: Polyvinyl chloride breathable bag / PVC breathable bag Bacterial permeability barrier. - spawn bags Suitable for many kinds of bacteriaMushrooms and bamboo fungus Ganoderma mushroom. - Air permeability can be quickly restored after contact with water, oil and other liquids. - Universal respiratory membrane Spawn 0.5 Micron Filter, 0.06MM thickne. SPECIFICATION: - Name: 12 Sizes PVC Mushroom Spawn Grow Bags with 0.2 Micron Filter - Material: Polypropylene PP - Quantity:10PCS