Weight divisions

Category Weight (up to)
Super Heavyweight 209 lbs+ (95 kg.+)
Heavyweight 190 lbs+ (86.183 kg.+)
Cruiserweight 190 lbs (86.183 kg.)
Light Heavyweight 175 lbs (79.379 kg.)
Super Middleweight 168 lbs (76.363 kg.)
Middleweight 160 lbs (71.575 kg.)
Junior Middleweight 154 lbs (69.853 kg.)
Welterweight 147 lbs (66.638 kg.)
Junior Welterweight 140 lbs (63.503 kg.)
Lightweight 135 lbs (61.235 kg.)
Junior Lightweight 130 lbs (58.967 kg.)
Featherweight 126 lbs (57.153 kg.)
Junior Featherweight 122 lbs (55.338 kg.)
Bantamweight 118 lbs (53.524 kg.)
Junior Bantamweight 115 lbs (52.163 kg.)
Flyweight 112 lbs (50.802 kg.)
Junior Flyweight 108 lbs (48.988 kg.)
Mini Flyweight 105 lbs (47.727 kg.)

According to rule 8, section 2, the minimum weight to compete is 100 pounds (45.36 kg.).