I can't believe that nobody has written a review for Hot Fill Bags yet. These things are great! You have to use your head though unless you want to get burned. I have fitted a used hot-fill cap with a cam-lock connector and I put the bags in a plastic tub before filling them so I can move them safely even if they are pretty plump. I connect a silicon hose from my kettle ball valve to the back and slowly fill it up leaving my trub cone un-disturbed. I also wear insulated gloves when I swap the cam-lock cap for the other cap. The pasturized wort keeps for weeks. The cap with the camlock and a sanitized hose goes back on to help get it into the fermentor without spilling.