Detail: * New PVC Mushroom Spawn Grow Bag * one hundred pc Brand new and fine * Can be used for operating spawn, and the mycelial fermentation cycle could be shortened * Help to increase the quantity of mushrooms * Suitable for mushrooms, fungus, grains * Material: Polypropylene * Dimensions(approx) Size: ◆180×350mm (Approx 7×14&;&;) ◆180×500mm (Approx 7×20&;&;) ◆250×500mm (Approx 10×20&;&;) ◆320×450mm (Approx 12×18&;&;) ◆320×500mm (Approx 13×20&;&;) Thickness: zero Air vent window size: 55×55mm Air vent window aperture: zero