Authentic black calf skin leather, silver hardware. Front/back both hv zip pockets. The center compartment will easily hold most bigger smart phones as well as keys, cards etc. No odors etc. Tiny blemish lower left bottom in last pic. If you're looking for a quality, lightweight, and smaller sized bag that tucks neatly under your arm this is it. Shoulder strap is 1" wide with a drop of approx 8". No idea what detachable logo strap is for. Zipper pull? Choker? Bracelet? Yorkie dog leash?