Removing strands form the wefting to keep full length

See how I remove the stitching from a weft in order to keep the full length of the folded in half hair. This way you can take a short weft and be able to use the full length of it when you ventilate.
You do this by cutting the stitching patiently and keeping the hair in line so as not to mess them up and voila, you have the hair unfolded with the full length of each individual strand!