Bubble Magic Extraction Bags, 20 Gallon - 4 BagsBubble Magic Extraction Bags Bubble Magic extraction bags are made of extremely durable and distinct looking black canvas. Each seam is double stitched with extra strong nylon thread. These bags have a unique extra level of micron screen along the lower layer. Each set comes in its own personal black carrying bag Each set comes with a different assortment of micron sizes. 20 Gallon 5 Gallon Pack of 8 Includes: 220 micron bag 190 micron bag 160 micron