Product related information Material: Canvas/Nylon Lining: 210D waterproof polyester lining Open cover method: zipper Internal structure of the bag: computer pocket, cell phone pocket, laminated zipper pocket, file pocket, camera pouch, zip pocket Function: wear-resistant, lightweight, waterproof, shockproof, breathable Applicable gender: neutral / male and female Applicable product types: IPAD, laptop, tablet, etc. Hardne: Soft Style: fashion sports Strap number: three Lifting parts: soft handle Style: Handbag Pocket cro section square Outer bag stereo bag Capacity: 20-35L Uses: Travel / Leisure / Busine / Learning / Computer Package appearance size / weight: 17.3inch45x32x16cm 15.6 inch: 40X30X13cm 2: Packaging 1x package About this item Convertible design. This bag can be easily converted to backpack, shoulder bag and briefcase.Removable shoulder strap is adjustable. The back strap can be hidden in a big back compartment when you use it as briefcase and shoulder bag. Multi-function convertible bags:Backpack, shoulder bag, briefcase.The handle can be hidden in the pocket with zipper when use it as a backpack.The backpack strap can be hidden when use it as a shoulder bag or briefcase. Made of high quality canvas,soft and water-resistant, Canvas is thicker than others, improves the service life.Upgraded lining, more durable to prevent any accidential riped. Built-in shockproof foam padding can always prevent impact force to protect your important item like laptop, or iPad. Size:17.3*13.8*5.1 inches. Roomy to keep 2-3 days clothes, ideal design for travel, busine or college life.Fits up to 17.3 inch laptop. Huge and reasonable space. One laptop compartment keep a 17.3 inch laptop,two layer of shockproof padding keep the laptop safe. The document compartment with serval pockets inside, store acceories reasonably.