Exterior Size: 345*230*25mm(13.6*9.1*0.79 inch); Compatible with Microsoft new Surface Pro 2017/Surface Pro 4/Pro 3 12.3 inches, iPad Pro 12.9 inches and most laptop/tablet with display size less than 13 inches. The sleeve fit for microsoft Surface Pro 4 and new Surface Pro with keyboard; Extra two side pockets, make it easy for you to carry mobilephone, charger, mouse, earphones, pens etc. ;