Sea Urchin Shells Size: Approximately 2mm to 10mm in diameter Quantity: Over 100 pieces, large and small Types: Bafun Uni (Red Sea Urchin), Murasaki Uni (Purple Sea Urchin), Komari Uni, and others Soaked and washed repeatedly with neutral detergent, then rinsed and thoroughly dried. ※ Some shells may be chipped, and some may contain sand or shell fragments. ※ If you purchase 2 or more shells or sea urchin shells, we will discount the shipping cost if you request combined shipping. Shipped via Yu-Packet Post Mini.