Based on this product's specifications, here are some alternatives and similar models
Toploader laptop bag Addison Technology Preston 15 for 39.6 cm (15.6") laptops, nylon, 3 compartments, black
Summary description:
Toploader laptop bag Addison Technology Preston 15 designed for laptops up to 39.6 cm (15.6"). Made of nylon, it has three main compartments, two front pockets, a carrying handle and an adjustable shoulder strap. Weighing 0.92 kg, the bag offers basic protection and organized storage for a laptop, charger and documents for daily commuting or business travel.