This is an authentic PROENZA SCHOULER Calfskin Large PS Courier Backpack in Black. This stylish satchel is crafted of smooth calfskin leather in black. This backpack has a sturdy leather top handle, adjustable shoulder straps, silver hardware, and an extra long facing flap with hanging straps and a silver switch lock. This opens to a spacious grey leather interior with hanging zipper and patch pockets. This backpack is perfect for all of your daytime essentials, with the fashion forward appeal of Proenza Schouler! Follow this item for alerts. Proenza Schouler is a registered trademark of Proenza Schouler. FASHIONPHILE is not affiliated with Proenza Schouler.