Chesterfield or Reefer is a term used to refer to a type of coat or jacket. It is typically made of heavy wool and has a velvet collar, often with a lapel. The coat is usually double-breasted and has deep pockets. It is usually worn as an overcoat in colder weather. Reefer is a variation of the Chesterfield coat, which is usually shorter and more fitted. It is also made of heavy wool and has a velvet collar, but it is usually single-breasted and has less deep pockets.