Bestbuy offers Samsonite - Classic 2 Backpack for 15.6" Laptops - Black for $44.99 (orig. $69.99) with free shipping.

Product Description:
An update to Samsonites Classic Collection. Featuring new logos, hardware, and lining, the Classic Business 2 aesthetic reflects a modern, tailored approach to business while still embodying a multifunctional, everyday appeal.This backpack comes with TSA-friendly design that allows you to unzip and lay flat for easy screening and a perfect-fit pocket for laptop protection.

• Perfect fit
  adjustable system provides a custom fit for most laptops 13” to 15.6”.
• Large main compartment
  For storage of cords, files, books, and clothes. Also has a zippered mesh pocket to secure smaller items.
• Exterior organization
  1 quick access pocket for smaller items and 1 larger pocket with organization to store essentials lined phone pocket, 2 pen sleeves, business card sleeves, mesh and slip storage pockets.
• iPad/tablet storage
  located in the TSA/PFT compartment.
• Side mesh pockets
  storage for a water bottle, umbrella, or other need it now accessories
• TSA/CPF construction
  unzips to lay flat for fast and easy screening without removing the laptop.
• Handle/shoulder strap
  Comfort neoprene accent on top carry handle. Contoured padded shoulder straps with airmesh for a comfortable carry.
• StackIt strap
  fits over most upright handles for hassle-free combination travel.
• Airmesh back panel
  Cool flow airmesh back panel padded for comfort and breathability.