KOS USA Boot cut legging workout pants w/ track stripes

Stretchy workout pants w/ two track stripes. A retro-ish blue color. I don’t think I’ve worn them. There’s a couple small spots of discoloration (white) on one leg (pictured). Maybe it’s lint? Very stretchy. I don’t think a true large. I would say fits like a medium in the waste. Slight flare (boot cut)