Easy to use, comfortable
I bought a different type of silicone temple tips to begin with, the kind that are long and tubular. They did not work for me. They caught in my hair, messing it up, but also did not keep my glasses from shifting. These, on the other hand, are great!  Easy to slide on, and once you place the tips on to begin with and put your glasses on, then you can slide the tips backward until the fit it just right. They are so comfortable you'll forget you're wearing them. AND--your glasses stay put.
Rating: 5 stars