This product is either discontinued or we cannot get that from suppliers.
Lenovo 4X40L45611 Thinkpad Active Backpack, Medium, Nylon, Notebook Size 15.6", Weather resistant, ventilated back panel, padded hand strap, 2 side stretch pockets, rubberised zipper pulls, removable sternum strap, Hand strap, shoulder carrying straps, side compression straps.
The Lenovo 4X40L45611 is a Medium notebook carrying backpack up to 15.6". The Lenovo 4X40L45611 is made with super lightweight, water- and tear-resistant nylon.