The opening of the bag on the side allows you to exit the camera without having to open. But if you walk in places where you may anyone can quickly take the device, you can make sure to block the opening.
The backpack bag part is the upper half of the bag leaving the square.
My laptop also comes without problems Inthe compartment provided for this purpose. Yet I have a DELL 15 "with a battery that exceeds (unlike bags usually provided for PC 15").
Finally, the straps are. There are the usual straps and an extra that goes to waist level (but I do not use).
He served in London sour rain for 3 days and nothing was wet.
Really a good product.