CARVD jaw exerciser tablets work great for refine jaw line~ It's nicely packaged with a 2 jaw exercisers packed inside a plastic container. Great quality~ Use the jaw exercise daily for five to 10 minutes to make the jaw line looking great~ The exerciser pieces fits nicely inside the mouth. I have no issues with them when using. Super easy to clean after use and store them away. Give it a try and you will like it~