Am interested in something similar, Pants with zip on the sides so you can wear them on Easily, it is meant to be over pants (pants you wear over your regular pants) so make them relaxed fit but not too lose, I dont want them as thick as the pants in the picture, material has to be waterproof.
Plain black pants with (Westman) written under
The waist in a similar style as the picture quoted.
Summary: Overpants pants to wear over your regular pants with zips on the side, not thick, waterproof, with westman logo at the left leg under the waist.