The Sak Sak Pack Nylon Backpack Body: 100% Nylon; Trim: 100% Polyurethane Imported Front pocket, flap compartment zip pocket , dog clip Adjustable straps Back, side entry with zipper closure for easy access Removable shoe bag, front wall zip pocket, front wall mesh pockets, padded laptop pocket, back wall id window 16 in l x 6in w x 17in l when closed, 22.5in l when opened. Drop as backpack: up to 15.5 inches Pockets: 4 interior slip, 2 interior zip, 2 exterior