Bonded leather is a relatively new process in the furniture industry. The process is basically this: they grind up little bits of surplus leather that would other wise be unused (a much greener process). Then they take these bits and bond it (hence the term) to polyurethane or non-top grade leather. Once bonded the material is stamped and dyed. This gives bonded leather a more consistent look and color than natural leather. Making a finished product that is essentially real leather for a fraction of the cost.