Mushroom Grow Bags with Injection Port and 0.2 Micron Gas Exchange Filter Patch, 6 Mil Polystyrene Grow Bag for Edible Mycelium Grain Cultivation,8 x 5 x 20 inch,10pcs

The mycelium grow bag made of durable, breathable material, it create the ideal conditions for mycelium development.Ample space for mycelium growing and benefit from air exchange which a critical factor for fostering , vigorous mushroom growth from start to finish. This grow bag is easy to use and good for beginner, making your first harvest easier than ever. Simply chose your substrate,fill it to the bag , seal the bag securely, and let it work. Multiple Sizes: 8 x 5 x 20 inches (200 x 120 x 500)mm 5 x 5 x 20 inches (130 x 120 x 500)mm 4 x 3 x 14 inches (100 x 80 x 350 )mm