In typical Milspex fashion, they offer a decent quality holster for a nice low price.
A Velcro belt loop attaches one end of the clip buckle to your belt, this clip attaches to the other half of the buckle on the holster itself. As a right handed holster, it sits in the drop-leg position on the right thigh. A pair of narrow elasticated straps go around the leg to Velcro secure on themselves. The result is a very easy to put on and holds securely.
The main housing is a universal type which will accommodate most forms of pistols (medium size semi-autos anyway) and even has a little Velcro expander to accommodate lasers, flashlights and the like (provided they are not too large). The top strap has two buttons to adjust for standard or longer weapons as well as a rear strap that Velcros around as an addition back strap support.
In the front side of the holster is a long pocket with a Velcro strap lid which could accommodate a stand alone flashlight or silencer, two more Velcro lid pockets on the side can accommodate two extra magazines between them.
As a universal type fitting holster you can expect this holster to fit most forms of standard size pistols (Model 17 / 1911 / Hi-Capa / 226 / M9 / etc) but it might run into trouble with revolver shapes and may have trouble accommodating anything longer or bulkier than a Hi-Capa.
The Velcro expansion inside is downwards so while it will allow for compact flashlights and the like it does not have an upward expansion for scopes or other such sights. As a fabric holster it might not attach to pistols as securely as polymer type clip holsters but it is universal for that reason and as Nylon fabric weave it is still tough, light and of course cannot crack or fracture.