Book measures: 21x18x7mm (0.83x0.71x0.27in).
Recycled leather is used where possible.
100% recycled book inner (manuscript proof copies that would otherwise be thrown out are used for book inners).
Packaged in biodegradable sturdy brown kraft paper box with original logo stamp on outer and library card on inner.
All metal used is nickel and lead free and non allergenic.
Due to the differing typesetting of publishers some books are totally blank, and others have a hint of text on the edges of pages. In both cases books can be written in, if you choose.