I just finished making two underquilt protectors out of Argon 90 from Dutch for my son's and my Ridgerunners. Here are the photos of the finished project. There are 3 yards of Argon fabric used for each UQP. I used 3/32 shock cord with some mini cord locks on the side pulls. The corners just have a slip knot tied with a bead in the loop to keep the knot from pulling out.