ITEM: Genuine Japanese Undried Hyuga Pumice for Orchid Bonsai Tree Soil Mix - Light weight, porous volcanic rock similar to pumice . - Great for bottom layer in the pot to prevent root rot. - Works well with akadama or other growing medium and compost. - Japanese soil mixes usually include Akadama, Kiryu Hyuga Pumice. - Product of Japan. PLEASE NOTE: This product contains a small amount of debris, is a normal phenomenon, since the transport process can not avoid friction, pressure and other circumstances lead to some of the powder situation. Thank you for your understanding SIZE: Shohin Particles are approximately from 2mm - 3mm VOLUME: approx. 16 Liter SHIPPING: - We ship in original imported Japanese bag. - This shipment cost cannot be combined with other items.