Women’s J Brand crop bootcut size 30

Women’s J Brand crop bootcut. I believe the style is the Gigi Style # JB000406 98% cotton 2% polyurethane 5 pocket styling with zip and single button closure. JBrand signature plain back pockets. As I was taking photos, I noticed a small spot on the back of the left leg. They have been washed so not sure if it is bleach or something I got on them awhile back. I never noticed until now. Inseam approx 25” Rise approx 9.5”