3sizes Mushroom Spawn grow bag pots pvc Growth Bags High Temperature Breathable Plastic Garden Planting Bag toolsPVC Mushroom Spawn Grow Bag Substrate High Temp Pre Sealable Garden Supplies Growing Planting Bags ToolName: PVC Mushroom Grow Bag Substrate high temperature Pre SealableSpecifications:Color: TransparentMaterial: PolypropyleneSize:180350mm (Approx. 713.7")180500mm (Approx. 719.6")320500mm (Approx. 12.619.6")Thickne: 0.06mmAir vent window aperture: 0.2umbag is resistant to high temperature about 0-130 degrees Celsius.Feature- Suitable for mushrooms, fungus, grains.- Square guet bags can help increase the amount of mushrooms.- Using these bags for running spawn, and the mycelial fermentation cycle can be shortened.- Air vent window design saves a lot of labor, you do not require drilling and oxygenation. And it can isolate bacteria via nanotechnology.- Polypropylene, high temperature resistance.Package include:Mushroom Grow Bag for chooseNotice:1.Please allow 1-5mm error due to manual measurement. Please make sure you do not mind before you bid.2.The colors may have different as the difference display, please understand.