Have been using some of these for a while now so thought I would add a little bit more to this thread.
1) As has been mentioned dont attempt to use them with the see through covers down at anything other than the shortest of distances as you are wasting your time.
2) In the gun bag on a number of occasions the covers have flipped open as they are not tight enough. I see this as a real issue and something that significantly increases the chances of the plastic hinges breaking.
3) Bottom line is you get what you pay for, if you have the cash go for the utler Creeks but if you are on a budget these are worth a punt.
Kindest regards
Barrel
IF I WALKED ON WATER PEOPLE WOULD SAY I COULD NOT SWIM !