Pearl Grey Biker Leather On Shoulder Bag. Pearl Grey Biker Leather On Shoulder Bag with Chain Detailing. BEX is a new addition to the Jimmy Choo Biker styles in soft biker leather. Multi-functional - adjustable chain strap so can be worn as a cross-body, shoulder or clutch bag. One main interior compartment with secure zipped pocket. Easily accessible quilted outer pocket with secure zip. Jimmy Choo identification hardware.