Smocks or Jackets are a pullover style and have no front zip, made of cotton and a veil.
One size suits most adults, generally considered xl in size. Will easily suit smaller sizes also just baggy which isnt such a bad thing anyhow.
Always white althought design varies a little to whats available (hat style, mesh style, pocket location), can view on pickups all the same, bit hard on deliveries to view.