Bubble Magic all mesh bags take the hassle out of essential oil extraction! No more lifting heavy bags filled with water, these bags drain super fast and cut the time needed to produce essential oil making by as much as 1/2. These bags are extremely high quality! Compared to regular canvas style bubble bags, there is no potentially toxic waterproof coating that can peel off making your bags useless. All seams are double stitched and are durable making these bags possibly the last bags you'll ever need as long as you take care of them. Each bag has a drawstring and is color coded for the micron sizes. These bags work great for many essential oil extractions such as lavender, rosemary, sage and any other herb that has trichomes.