A unique composition of 100% natural book cloth material with expendable elastic pen holder function on the spine. Manually stitched together with environmental friendly imitative leather paper. Printed in soy base ink and manufactured in certified green factory. Detailed driven designed with functional features; book opens lay-flat, re-enforced expendable end pockets with special slots for cards and double bookmark ribbons. Comes in wide rage of colors suitable for any type of occasions, style or mood.