What kind of closure is the 'hidden button' mentioned in shirt descriptions?

When reading AMOMENTO's product descriptions, one encounters the word 'hidden' multiple times. Among 622 collected products, this expression appears in the descriptions of 44 products^[1].

A hidden button does not mean there are no buttons; rather, it is a closure made by adding an extra layer of facing to the front edge and placing the buttons and buttonholes inside so they are not visible from the outside. Even when buttoned up, only a single vertical folded line remains on the front. Burgundy in SQUARE POCKET OVERSIZED SHIRTS exposes only the first button on the outside and finishes everything below it with this method^[2]. The chest width of this shirt is 59.2 for M and 61.7 cm for L^[3].

Putting it on and taking it off is no different from usual, but it makes a difference in care. Because of the structure with an added layer of facing, you need to press underneath it when ironing so that the front line stays straight, and since the buttons do not rub against the outer fabric, surface damage tends to be lower.

hmmm, the fact that only the first button is left is particularly noticeable on this shirt. In an oversized silhouette with a wide front, a line of buttons would draw the eye along that line, but here the closure is revealed at only a single point below the neck.