Virtual Sun Bubble Bag Kits are the Premium choice for Essential Plant Filtration. They are designed to extract the herbal resins that plants naturally secrete both safely, and efficiently. The Bubble Bags are colored according to Micron "filtration" Rating, allowing the user to meet several or single extraction requirements. Virtual Sun Bubble Bags all feature durable, high quality mesh screens that are sewn to meet and exceed quality standards. The Plant extracts that can be accumulated using this process are perfect for cooking, soaps, aromatherapy and various ointments. Virtual Sun Bubble Bags use 100% waterproof nylon sidewalls, 800 thread count nylon for the 5, 20 and 32 gallon bags and 400 thread count for the 1 gallon bags. PVC free waterproof coating.