Lenovo offers its Lenovo IdeaPad B450 15" Notebook Backpack in Basic Black, model no. 55Y2094, for $39. Coupon code "USP1O12094" cuts it to $13.65. With free shipping, that's tied with our mention from two weeks ago and the lowest total price we could find. Sales tax is added where applicable. This backpack accommodates laptops with up to 15.4" screens and features a large front zippered pocket, mesh side pockets, padded shoulder straps, and more. Coupon expires October 10.