The worsted wool tuxedo is the most popular fabric that is sold. Most tuxedos that you see in tuxedo formal wear shops are made of worsted wool. Worsted wool has 60-75 threads per square inch. The Super 100s, Super 110s and Super 120s contain that many threads per square inch, and therefore they are much softer fabrics. A Super 120 wool tuxedo is simply the best quality tuxedo you can buy.