Quoting from [importghuru]:
This is a much debated issues these days. Is bonded leather real leather.
Please note: PU Leather is not bonded leather.
Bonded Leather , or "Reconstituted Leather" is not really a true leather but a man-made material composed of 80% to 100% leather fibers (often waste scraps from leather tanneries or leather workshops). It consists of collagen fibers obtained from macerated hide pieces bonded together with latex binders constructed into a fibrous mat to create a look and feel similar or sometimes identical to that of genuine leather but at a fraction of the cost. Bonded leather is not as durable as real leathers but durable enough for a several years use. It characteristically lacks the "smell of leather". Depending on the quality a man-made pattern is usually discernible as a "grain-like" look.
Examples of products that are most commonly constructed with bonded leather are; Bibles, diaries, art books, desk accessories, hymnals, bags, belts, chairs, etc.
Bonded leather industries could be considered as enviromentally and ecological friendly because their leather scraps recycling, in fact these scraps are very difficult to eliminate and finally, they are converted in a new recyled leather end product.