About this item SIZE Internal dimension : 15.55 x 11.61 x 1.7 inch / 39.5 x 29.5 x 4.5 CM (L x W x H); External dimension : 16.34 x 12 x 1.89 inch / 41.5 x 30.5 x 4.8 CM (L x W x H). Ideal fit for most 15"-15.6" laptops for compatible with APPLE, rosoft,compatible with Acer, compatible with Asus, Hp, Toshiba And More.In order to choose the appropriate size of the laptop sleeve,please kindly check the dimension of your laptop before purchasing. MATERIAL The outer material of the briefcase is made of high quality waterproof fabric,while the inner of the briefcase is made of soft lining,which can protect your laptop from rain,dust and scratches. LAPTOP PROTECTIVE LAYER The main pocket compartment is with elastic straps,whihc can provide more protection for the laptops and tablets.There are soft paddings on the bottom, sides and at the back of the laptop compartment, with which can be used to store valuable electronic accessories and offers space for books and documents. The briefcase bag is composed of outer PU/Non-woven fabric + medium EPE + inner lining, which can absolutely protect your laptop and valuables. MULTI STORAGE 1x main pocket,including 1 x laptop compartment,1 x front pocket (with inner pockets),which provides enough space for accessories,books,newspapers,power adapter,charger,cable,mouse,mobile phone,earphone,pen,etc. MULTI CARRYING DESIGN The laptop sleeve comes with a detachable and adjustable soft shoulder strap,which can relieve your shoulder pressure.And the soft sturdy PU handle can be carried for a long time in a comfortable way.The deliated design with a flat p-through strap at the back,which allows the briefcase slip over the handle of any luggage case securely for hands-free.