These are 14a filterpatch mushroom grow bags. They hold approxietly 5-6 pounds of hydrated substrate.
Manufacturer's specs:
Type: Gussetted
Material: 2.2 Mil Polypropylene
Bag Size: 8″ X 5″ X 19″
Filter Type:A
Filter Size: 1.5″ X 1.5″
Filter Pore Size: 0.5 microns
Filter Hole: Style L
Unicorn 14a bags-50x FREE SHIPPING
$38.00Price