I got my replacement pack last week and have been busy so I opened it up. Hopefully This will help others with the same issue as me. What iv been doing To find and possibly check the briefs for pin holes open the package halfway like shown in the picture and run your hand up and down each brief. You will feel bumps which is normal but you may feel a "Sharp bump", and that MAY be a pin hole or where the absorbent crystals have poked thru, if ya look real close you can tell. The pack pictured is the replacement pack that was sent, and I can say at least 3 of these most likely will have pinholes. Iv notice the issue seems to happen where they are folded , but I'd recommend checking the whole brief and hopefully you can avoid a leak. Personally I would have zero issue just wearing a cover over these but it's 93 degrees here in Montana and I work outside so it's not an option for me personally but anywhere else iv used my cover and have been fine. And I've had way to many bad experiences with cloth backed briefs to even consider those.