Pre-Sealable Design: Effortlessly seal these mushroom For spawn grow bags for a - cultivation environment, perfect for bulk mushroom growing projects and maintaining consistent moisture levels throughout the growth cycle Filter Patch Technology: Featuring a 5.5*5.5cm filter patch with 0.2µm aperture that allows optimal air exchange while avoiding contaminants, guaranteeing proper gas exchange for mycelium development and shortened fermentation cycles Premium PP Material: Constructed from Quality polypropylene material measuring 150*500*0.06mm, these long lasting mushroom grow bags provide excellent permeability and integrity for multiple growing seasons Versatile Cultivation Solution: Suitable for various edible mushroom species and cultivation, these breathable bags create the suitable environment for successful mushroom farming with proper air circulation and moisture control Growing Kit: Each package contains 50 pre-sealable mushroom For spawn bags, providing ample supply for both commercial growers and gardening enthusiasts to maximize their mushroom yield potential