I have very thin “chicken legs” and had tried another tongue pad that went inside the boot, but they were too thick and stiff. These pads are just the right thickness, so they do not alter the fit of the boot. Also, the shape and cut fit perfectly to precisely wrap around the shape of the upper 2/3 of the tongue w/o having to cut the pad. I recommend that you slightly heat the adhesive w/ a hair dryer for the best adhesion.
I have really narrow calves and this was a huge help for getting a better fit on my lower leg and a more responsive boot. I combined this with the dualstraps 2.0 and it is a great combination. One thing I did was cut a little bit off the bottom of the pad to make sure it did not inhibit any ankle flex. It was really easy to do. Also, can't say enough about the amazing customer service from Craig.
Not that great the adhesive was not strong enough even after heating them up had to use another adhesive to have them stick