Lenovo IdeaPad T150 15″ Top Load Laptop Case (Green Point) for $11.25 shipped after coupon code USPC11F29397. Make sure there is no extra space before and after the code in order for it to work. Here is a screenshot for your reference. It is made of made of water-resistant polyester, fits laptops with up to 15″ screen sizes, and has accessory pockets. Most places have this laptop bag for about $20.