Createreedo Canvas Messenger Bag CrossBody bag Shoulder bags Leisure Bag fit up to 11.6 inch computer Canvas/Leather Size: 12.5in(L)*3.9in(W)*10.5in(H),it could fit up to 11.6 inch Macbook air ,the weight is 1.36lb Total :7 pockets ,Structure: one main zipper comparment with 2 Inner layers and 1 zipper pocket inside , 2 Front Pockets & 1 Back Zipper pouch the capacity:you could put one 11.6" macbook air or ipad 2pcs of 300 sheets B5 books ,your phone wallet keys etc the A4 binder could not fit Strap Adjustable Length: about 23 -59inch,you could use it as shoulder bags or crossbody bags by adjust the strap material :Cotton Canvas Fabric&Genuine Leather Parts ,there is magnets to make you open and close this bag quickly and convinent but security