Based on this product's specifications, here are some alternatives and similar models
Backpack XDDESIGN Bobby Edge anti-theft white — 17 L, fits 16" laptop, water-resistant, 1.1 kg
Summary description:
XDDESIGN Bobby Edge is an anti-theft backpack in white with a 17 L capacity designed to hold laptops up to 40.6 cm (16") and a tablet in a dedicated compartment. The lightweight 1.1 kg pack features water-resistant material, a notebook compartment, and an organizational panel for cables and small items. Suitable for daily commute, travel and urban use.