Beautiful well-padded case 1cm env.d'épaisseur at all levels (bottom, sides and top). I pc 15.6 (16/9) which measures 39 / 26.5 cm and it fits perfectly touching the 4 corners of the briefcase so perspective stability, no problème.Cette bag is equipped with a strap sewn in the bottom and which closes thanks to Velcro + another band padded 1 cm thick that attaches to two pieces of Velcro that is sewn on the edges twofold maintaining security for the pc. The inside flap offers storage card type blue + another for 3 pens + a bag net with a Velcro flap that measure approx. 32/11 cm. Outside of the lid of the case is a storage 38 cm long and 20 cm deep and can accommodate an object 5 cm thick + storage without problem.This has a quilted flap velcro.Côté opposite you will find also a kind of pouch even dimension.Les zippers have the strong air and you can even secure closure with a padlock (not supplied) .The handle and shoulder strap are of good quality too. In short, a bag of very good quality for a minimum price so do not hesitate.