Thank you for viewing. I am selling transparent book covers from Comic Samurai. For young adult comics, B6 size 50 sheets, UV cut film UV protection When shipping, I will lightly fold them to fit into an A4-sized envelope. I don't think there will be any creases, but please refrain from purchasing if you are concerned. Thank you. ~From the Comic Samurai HP~ These are Comic Samurai (transparent book covers) for young adult comics. They are compatible with B6-size young adult comics, approximately 130mm wide x 183mm tall x 5-20mm thick. Suitable for "Kingdom," "Space Brothers," "Black Butler," etc.! They are UV-cut processed, which protects your precious comics from sun damage.