Lightweight Laptop Backpack Waterproof Multifunctional Unisex Rucksack Computer Bags for 15" Laptop Travel Bag Black Measurements: 18"* 12"* 7", large enough for A4 paper, 12"-15.6"inch Laptop, iPad. The laptop sleeve is removable and adjustable so that the laptop won't wobble inside. Material Description: 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.