I love these things. I use them as a little reminder on the underside of my rotary ruler of the size I am supposed to be cutting. Let's face it, everyone gets distracted from time to time.
I also use them to place the stack of fabric exactly where it needs to be under specialty rulers I don't use every day. (Click on the smaller picture.)
The vinyl is thick enough to allow me to line up the fabric by touch. Don't get me wrong, I still LOOK at the lines on the ruler, but these little orange strips save me a lot of time.
Cutting Edge strips stick with static cling. There is no glue to gunk up your fabric. They stay on until you peel them off. (They will only work on rulers that are slick, not textured.)
You'll get 10 bright orange re-usable strips per package. Enjoy!