Urban Worm Bag Version 2NEW and IMPROVED DESIGN! Produce worm castings quickly with the Urban Worm Bags aerobic design and 900D Oxford fabric that breathes without losing moisture too quickly Simple feeding thru top and easy worm castings harvesting thru no leak, marine grade zipper bottom. Moist castings at the bottom will exit the Bag in a controlled manner Promote rapid worm reproduction and food waste recycling with continuous flow design. Most users will never have to