1. 2 samples are sent free of charge, and two models are randomly selected. 2. To collect free samples, you need to pay 1 USD shipping fee. 3. Because the postal packet is mailed, the aging time will be longer than 5-10 days. Order carefully! 4. If you need to receive the goods early, you can contact customer service to take other courier services such as: DHL, UPS, etc. 5. 2 samples will be packed in opp bags and then mailed in opaque bags.