noun
crotch reinforcement piece; saddle
A piece of fabric sewn into the crotch of pants or a garment to reinforce it; also called a saddle in tailoring. A technical term used in sewing and clothing construction.
このズボンは股布が付いているので、動きやすい。
These pants have a crotch reinforcement piece, so they are easy to move in.
股布を縫い付けるときは、生地の向きに注意してください。
When sewing on the saddle, please pay attention to the direction of the fabric.