Based on this product's specifications, here are some alternatives and similar models
Backpack StarTech.com NTBKBAG173 17.3" Laptop Ergonomic Durable Nylon
Summary description:
The StarTech.com NTBKBAG173 is a professional laptop backpack designed for IT professionals. It features a removable accessory organizer case, ergonomic design, and is made from durable ballistic nylon. The backpack can accommodate laptops up to 17.3 inches and includes dedicated pockets for notebooks and tablets. With a weight of 1.5 kg, it is lightweight yet sturdy, making it ideal for work, travel, and commuting.