Eileen Fisher leggings. They are black and made of a soft, stretchy fabric. The size is Small. Only callout is broken/missing thread on one side of the waistband as shown in last photo.
92% viscose 8% Lycra
Measurements approximate:
Waist: 26” laying flat
Rise: 10”
Inseam: 28.5”

Designer, stretch, minimalist, casual, stretch