The crotch part of Levi’s is one of the representative details that change with the ages.
This is the first part of judging the age of the 501.
Crotch rivets have existed since the birth of jeans.
After that, as the times progressed, the rivet disappeared and became an offset bar tack. And it will be the same bar tack as now.
This is an important place to protect the important part of the person who wears it in any age.
Looking forward to further evolution in the future.