Lenovo IdeaPad B450 Backpack (Black) for $15.60 shipped after coupon code USPCJN12094.  Here is a screenshot for reference. Make sure there is no extra space before or after the coupon code in order for it to work.  This backpack is made of lightweight water-resistant nylon, has multiple compartments and pockets, a trolley strap for attachment to rolling luggage, and fits laptops with up to 15.4" screen sizes.