[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 mushroom grow bags can withstand temperatures up to 399°F (204°C) without melting or breaking, making them suitable for use in a pressure cooker when preparing substrate. [EXCELLENT FILTRATION CAPABILITY] These mushroom spawn bags feature a 0.2-micron breathable filter patch that effectively blocks contaminants from entering the bag while allowing for proper gas exchange, supporting healthy mushroom respiration and metabolism. [WIDE RANGE OF APPLICATIONS] These mushroom grow bags are ideal for cultivating various mushroom types, including oyster, shiitake, and reishi mushrooms. Color: transparent Material: plastic Size: 50 x 20 x 12 cm Package Contents: 25 x Mushroom Grow Bags Only the above package content is included; other items are not part of this package. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.