Product Details: POLA B.A Milk N Sample 0.8ml x 100 packets set ※Photo shows 10 packets x 10 bags Shipping: ★Shipping costs will be covered by the seller. Items will be shipped within 2 days after payment is received. There is a serial number on the back, but the number is different each time, so the number in the photo is an image. If you would like to know the current serial number, please feel free to ask. Thank you for your understanding. m(__)m