These postcards are made from thick high-quality matte paper, so they serve as a great addition to a gift or just a thoughtful written note to a friend. ? Cardboard paper ? Paper weight: 7.67?10.32 oz/yd (260?350 g/m) ? Size: 4? 6? (101 152 mm) ? Paper thickness: 0.013? (0.34 mm) ? Coated outer surface ? Blank product materials sourced from Sweden, US, Brazil, or China This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions! PLEASE NOTE BUSINESS HANDLING TIME - NEARLY ALL ITEMS ARE CUSTOM-MADE UNLESS SURPLUS IS ON HAND