[LARGE-SIZED TRANSPARENT MUSHROOM SPAWN BAGS] These mushroom grow bags provide ample space for mushrooms to grow. Measuring 8 inches in length, 5 inches in width, and 20 inches in height, they can accommodate 3 to 4.5 pounds of substrate, creating an ideal environment for mushroom growth, spawning, colonization, and fruiting. [DURABLE, STURDY, TEAR-RESISTANT] Our mushroom grow bags are made from high-quality 6-mil thick polypropylene, known for its non-melting, non-breaking, tear-resistant, and long-lasting properties. [HIGH TEMPERATURE AND PRESSURE RESISTANCE] These spawn bags can be used with a pressure cooker for sterilization. They can withstand temperatures up to 399F (204C) without melting or breaking. [EXCELLENT FILTRATION CAPABILITY] These mushroom spawn bags feature a 0.2-micron breathable filter patch that effectively prevents contaminants from entering the bag. It also allows for gas exchange, supporting healthy mushroom respiration and metabolism. [WIDE RANGE OF APPLICATIONS] These mushroom grow bags are suitable for cultivating various mushroom types, including oyster mushrooms, shiitake mushrooms, and reishi mushrooms. Color: Transparent Material: Plastic Size: 50 x 20 x 12 cm Package Contents: 25 x Mushroom Grow Bags Note: Light reflection and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.