These are so cool! The curtains just glide right along the rod with no snagging.. at least up until the spot where the tension rod turns to tighten or loosen.  So unless you need to open your shower curtain, all the way to the end, you will have no issues. Also, if you have a built in rod then these are just perfect and you will LOVE them and wonder how you lived without them!!!  I have a tension rod, so I just keep the glider hooks that I would need to open and close on the main side of the tension rod so there are no issues. I love these!!!