Wiltshire Police are hunting a man who indecently exposed himself to a mother and her seven-month-old boy near Mannington Retail Park.
Police say that the incident happened at around 2pm on 16 November, on Telford Way.
A spokesperson said: “The 31-year-old victim was walking her seven-month-old son at the time of the incident.
“The man is described as aged approximately 25 to 30 of slender build, with dark skin and black hair described as messy and slightly wavey. He had a beard and was wearing dark trousers and an ochre coloured jacket.
“Anyone who may have any information should call PC Charles Campbell on 101, or Crimestoppers on 0800 555 111 where information can be left anonymously if preferred.”