Sezane and cōme camisole

Stylish navy and white cami top with a delicate pattern. Features thin straps and a comfortable fit. I’ve only worn this once but somehow there are marks on the straps as pictured. I’ve never tried to get the marks out, can’t tell if they are stains or not. Such random black marks, but it’s such a nice cami. FR size 38 equivalent to a size 6.