Michael Kors Ladies Backpack. Polly series. SKU: 30F9SP5B2C-414. Barcode: 193599031552. Color: Blue. Michael Kors Blue Polly Medium Nylon Gabardine Backpack. Crafted from nylon and features a central compartment with multiple multifunctional pockets,double zipper front pocket, zip clsoure, a top handle and adjustable shoulder straps.