These are fantastic - low cost, functional and provide added embouchure control.
I recently started playing alto sax and noticed some wearing from teeth marks in my mouthpiece. I installed one of the 6 mouthpiece cushions a few days back (just in time; before any serious mouthpiece damage had occurred). I used an alcohol swipe to clean the mouthpiece and ensure effective stick-on.
I love the feel and added control of the cushion which is soft and grippy for your top teeth. The cushion also has excellent wear resistance (no teeth marks or penetrations yet; albeit +5 spares in the pack).
Great product - must have - highly recommended.
Rating: [5 of 5 Stars!]