["brand new and high quality\nFeatures:\nThe growing mushroom bag is suitable for mushrooms, fungi, grains and so on. \nDesigned to help increase the amount of mushrooms. \nUsing these bags to spawn, and the mycelial fermentation cycle can be shortened. \nAir vent window design saves a lot of work, you don'for t need drilling and oxygenation. \nAnd it can isolate bacteria through nanotechnology. \nThe mushroom growing bag is made of high quality polypropylene material, with high temperature resistance, durable, breathable and nontoxic.\nMushroom Growth Bag only, other accessories demo in the picture is not included!\n\nSpecification:\nMaterial: Plastic\n6 Sizes Optional: 15x35cm / 15x50cm / 18x35cm / 25x50cm / 32x45cm / 32x50cm\nThickness: 0.06mm\nAir Vent Window Size: 5.5x5.5cm \nAir Vent Window Aperture: 0.2um\nColor: Transparent\nQuantity: 20 Pcs\n\nNote:\nNo retail package.\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage includes:\n20 x Mushroom Growth Bags"]