u/Latter-Permission821

I just got the givenchy moleskin mmw jeans, beautiful pair but the zip system caught me off guard, is there supposed to be just one loophole for both button and the hook? Also when i try to pin up the hook in the hole it dosent fit entirely and keeps falling off when i walk, on the other hand when i use the button the rest of the jeans just hangs like theyre open, is this supposed to be like this? Any tips or info would be appreciated