Unisex Lightweight Slim Waterproof Multifunctional Backpack for 15.6" -17' Laptop MacBook Air/Pro Backpack Nylon Imported Zipper closure Measurements: 19.3"* 13"* 6.3", large enough for A4 paper, 17 inch Laptop, iPad. The laptop sleeve is removable and adjustable so that the laptop won't wobble inside. Material: The foam base jacquard nylon material production,product durable,hidden front zipper design.Nominative layer zipper with anti-theft protection. Handle/ Straps: Attached adjustment. The humanized multiple interior compartments design allows your personal staff being organized.