Small Packets Air is the free shipping option offered on shopping carts over $50 USD shipping to the United States, Australia, New Zealand, China and Japan. This method of shipment does NOT have a tracking number option. Delivery estimates differ slightly from one region to another, but generally speaking, orders can take anywhere between 5 to 12 days to deliver (although it can take up to 30 days in some countries depending on customs clearance and the national post carrier at the destination country, but this is VERY rare).