Bubble Bags 20 Gallon 'Original' 8 Bag Set. Never used. Our Original Bubble Bags are professional quality, heavy duty bags. The nylon sidewalls are the heaviest, most durable fabric available in an extraction bag. FEATURES Top quality precision heat pressed German monofilament polyester screen, exact within 1 micron Triple stitched 100% nylon bonded thread for extra strength Originals carry a Lifespan Warranty against manufacturer's defects - expected lifespan of over 200 uses with proper care The 20 Gallon Standard Bubble Bag kits can process up to 2 pounds or approximately 1 kilogram (dry weight) of plant material at a time. The bucket shown is not included with this set