Alembika trousers - style name is the Punto Pant.
Elastic waist. Stitching at the side of the leg gives it an almost barrel leg shape.
Size 2. This is a US 8-10, which makes it a UK 12-14.
Approx measurements:
Total length 37 inches
Inside leg 28 inches
Rise 11 inches
Waist 27 inches around
In very good used condition. Some wear to the label.