also: スーパーウエルターきゅう
super welterweight
A weight class in boxing and other combat sports, between welterweight and middleweight.
He defended his super welterweight title.
Standard katakana spelling for the weight class.
Variant spelling with ウエ instead of ウェ; less common but still seen.
Borrowed from English 'super welterweight', combined with the Japanese suffix 級 (class/division).