The front compartment is dome-shaped to give it extra room to fit your car key or earphones as an example. And the front panel section uses a reflective material to shine bright when hit by light for extra protection at night.
The main compartment can be used as a wallet, with cash and card slots, while extra storage for your smartphone and travel essentials such as your passport.
The shoulder strap can be removed to allow for carry by hand. And with four attach points for the shoulder strap, it can be carried horizontally or vertically as preferred. A clip at the tip of the loose end of the shoulder strap allows you to attach the end to the bag to avoid getting tangled while in motion. All the little details in a compact form.