This cover is not attached to the strap so you can change it out when you want. I only wanted to cover the mesh part of my strap, so I cut my fabric into 2 3/4 in x 24 inch strips. You measurements may be different, depending on how wide/long your strap is. To make them a little more sturdy, I added a some iron-on fusible webbing. Basically just sew them together on one side (pattern sides facing each other). Then sew a seam at the top and bottom. After that, with the pattern sides facing each other, sew the other side together. Now you will have a tube that you will need to turn right side out. Iron it flat, and you are done.