Let's relax, for that, place a cloth in the pocket, emphasize one end of the towel through the hole in the socket and twist the pocket in every possible way and without hesitation. It should crumple as possible.
After 10 minutes of this treatment, the bag has become much more flexible, you can remove the cloth, making the cut from the tip to fit the size of your sockets (sockets must, when they are well advanced the bottom of the pocket, do not exceed more than 1 to 1.5 cm maximum).
It'll just use it for your cooking :)
Very good quality / price ratio, a pocket that lasts ...
I highly recommend, especially less than 10!