I'm looking for water-resistant or waterproof trail pants. A friend recommended full zip legs, and I asked, "Where do you get those?" 


"Um... not in my size."

Do full zip pants in 1X-3X exist anywhere?  Are there men's Big and/or Tall that might work?  (I am short *and* fat so I'd prefer 'big' rather than 'tall.')  Will the co-op ever start a line of these?