Premium 0.22 Micron Medium Spawn Bags 5"x4"x20" (50-PACK)

Microppose Premium Medium Spawn/Grain Bags (50-Pack) are designed to boost colonization speed and yield healthier, larger mushroom fruits—all while saving you money. Each bag comes equipped with a strategically placed 0.22-micron filter patch, delivering excellent fresh air exchange (FAE) for faster, more robust growth. Made from durable 3 mil polypropylene, these gusseted bags help lower the risk of contamination by resisting micro-tears better than cheaper alternatives. Enjoy bigger harvests, fewer contaminants, and easier cultivation with a bag that beats more expensive brands on both quality and price. 0.22 Micron Filter Patch: The generously sized hydroscopic filter patch efficiently promotes FAE, speeding up colonization and improving overall mushroom health. Ample 20" x 5" x 4" Gusseted Design: The roomy interior allows the substrate to expand comfortably, leading to better nutrient distribution and healthier fruiting. 3 Mil Polypropylene Construction: Tough and tear-resis