The roll-top access with a redundant double closure system, two V magnetic buckles and two 20mm magnetic buckles, feels very sturdy and provides the sense that your belongings are well protected.
The extra-padded back panel has a chunky YKK zip closure, which allows access to the internal storage and is secured with two plastic buckles placed on the top of the shoulder straps and two magnetic buckles at the end of the roll-top access. In theory, when rolling the top of this backpack, you are also twisting (and by doing that, you put them in position) the main buckles to engage and close the back panel access.
There are two front pockets, an upper fairly large pocket, closed by a waterproof guarded zip which also contains a small security pocket on the inside. The bottom pocket is barely perceivable and is ideal for small items such as keys or chargers.
On both sides, under the compression straps, there are two side pockets which can fit a small umbrella or a small bottle—I managed to put my camera tripod in there and it was perfectly secured to the pack.
On the back panel, an invisible security pocket is accessible by a zip in the side of the back panel padding. This is where I usually place my wallet.
A magnetic sternum strap will also ensure stability when riding a bicycle.
The internal main compartment is accessible by unrolling the top or by a back opening similar to camera-dedicated backpacks. The panel can be unzipped 3/4 of its length, leaving the access always partially closed and forcing the user to unzip the pack while sitting it bottom down instead of resting it on its front as is common for most camera-dedicated packs.
On the internal back panel, two big padded compartments are natural-born carriers of a laptop (up to 16 inches) and an iPad.