Ha! Your English is better than my Slovene ( as in none).
MOLLE attachments use a stiff loop with a snap on one end. The loop slides behind a webbing strip on the pack. It is used for attaching pouches and other gear to packs, belts and vests.

You have probably seen all kinds of civilian variations. The idea is to have a line of webbing sewn to the pack or belt using bar tacking, so there are spaces between to slide the mounting loop through. It is simple and stable. The same loops can be used over a plain belt too, so those pockets could be worn alone as well.
Granite Gear makes some packs and accessories that use similar attachments. The GG Leopard pack has no waist pockets, but it does have the webbing "rails" to mount pockets. An accessory tool loop is shown below mounted on a webbing array on the Leopard waist belt.

Edit:
I dove into my "pouch box" and found these examples.
Left to right:
Military style MOLLE smoke grenade pouch
Outdoor Research zippered belt pouch with Velcro tabs (this is exactly what I would do)
Tamrac lens case with belt loop and snaps. This is common in a lot of camera carry systems. The single wide tab requires a matching space on the webbing, limiting placement. Two small and widely spaced tabs, like the OR pouch above should be more stable too.

Having an interchangeable system allows more sizes all kinds of adaptations and uses. From the marketing standpoint, the manufacturer can sell more universal pockets for his own gear and everyone else's packs too.
The thing to watch about size is getting them too thick and whacking them with your arms or catching brush on the trail.
Thanks for sharing this.