[LARGE-SIZED TRANSPARENT MUSHROOM SPAWN BAGS] These mushroom grow bags offer ample space to ensure mushrooms have enough room 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, providing an Perfect environment for mushroom growth, spawning, colonization, and fruiting. [DURABLE, STURDY, TEAR-RESISTANT] Our mushroom grow bags are crafted 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] You can heat cooking the spawn bags prepared with mushroom substrate in a pressure cooker. These mushroom grow bags can withstand temperatures of up to 399°F (126°C) without melting or breaking. [EXCELLENT FILTRATION CAPABILITY] These mushroom spawn bags feature a 0.2-Micrometre breathable filter patch that effectively prevents impurities from entering the interior of the mushroom grow bag. Additionally, it facilitates gas exchange, crucial for mushroom respiration and metabolism, promoting their healthy growth. [WIDE RANGE OF APPLICATIONS] These mushroom grow bags are a cost-effective choice for growing mushrooms. You will receive spawn bags that can be used for a variety of mushrooms, such as oyster mushrooms, shiitake mushrooms, reishi mushrooms. Colour:transparent Material:plastic Size:50 x 20 x 12cm Package Contents: 25 x Mushroom Grow Bags / 50 x Mushroom Grow Bags Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.