Thank you for visiting this page out of the many available. This is cardboard for protecting trading cards from bending. Size: 68mm x 93mm, thickness 0.8mm. *Very sturdy. The different colors of the cardboard in the photo are the back and front. All are the same cardboard. If you need more, we can offer a slightly lower unit price per set. It is a size that can be sent via Mini Letter. Shipping methods are standard mail or Click Post. If you prefer anonymity, please contact us in advance, and we can accommodate you for an additional 30 yen. Thank you. Series...Trading Card Others