Ikaros from "Sora no Otoshimono" looks shyly up at you, clutching a watermelon for dear life! She's printed on the front of this handy book cover--it measures 32cm at its longest point by 17cm, and is made of sturdy woven fabric. Tuck one edge of your book's cover in the side, and then slip the other cover through the strip of fabric in the middle; the rounded edge will fold inside the book and keep your place!