noun
baggy tobi trousers (seven-tenths length)
A specific style of tobi (construction worker) trousers where the loose, baggy portion occupies about 70% of the total leg length. The term is a specialized clothing term; the cross-reference 川崎七分 likely refers to a regional or brand variant.
See also: 川崎七分
職人さんが履いている七分は、動きやすくて格好いい。
The shichibun trousers that craftsmen wear are easy to move in and look cool.