With felt beaters, you often assume that after a short while of using it the felt starts to wear and gradually get smaller. Although I use this beater every day the felt is still in tact and shows no sign of wear. Now, I have a heavy right foot, and my kick drum does take a beating, but this beater is as tough as nails.
What is also great about this beater is that it reacts to a tight head as well as it does to a loose head. If you have an open sounding bass drum or even a dead sounding bass drum, this beater will work wonders.
The question I have yet to answer about this beater however is how it would perform on a double bass pedal. The size of the beater is larger than most, and depending on how close you like your beaters on your pedal, two of these beaters may touch. You would therefore have to move your positioning which may not feel comfortable.
The only downside I can think of is that it gets dirty rather quickly, and I am yet to find a way to clean it.
But a great pedal nonetheless!