Metal Wire Material: EcoBrisa outdoor compost bins are made of high quality metal material, known for its durability and reliable performance; the quality guarantee ensures long term use. Ideal Size: EcoBrisa outdoor compost bin comes in two sizes: 30 x 9 x 9 cm and 31 x 10 x 10 cm. Small and compact, it won't take up too much space, but it has strong organic waste composting capabilities.It is perfect for gardens, or if you want to set up multiple composting sites in your backyard or greenhouse, this composting machine will be your ideal choice. Efficient Composting: The worm composting bin is ventilated 360 degrees to increase air circulation and ensure smooth heat dissipation. Provides a comfortable environment to increase composting efficiency, it helps worms break down food waste and garden waste more efficiently so your plants and flowers can thrive. Easy to Use: EcoBrisa underground worm composting bin does not require complicated assembly; you just need to open the lid, put your kitchen waste in, and leave the rest to nature and worm.This simple operation method is easy for even novice gardeners to get started with. Excellent Choice: Through the biological decomposition of worms, garden worm composting machines can quickly convert kitchen waste or other organic waste into nutrient rich garden bedding.Not only does it achieve the reuse of waste, but it also greatly improves the sustainability of horticulture. Whether you are a gardening enthusiast or a professional horticulturist, you can consider using this worm composting machine to help your gardening career.