An 18-year-old woman was flashed by a cyclist while having a picnic with friends.
The offender fled the scene on a black bicycle before returning to the scene and exposing himself to the victim again a few minutes later.
Today, police have released an e-fit to try and track down the man who exposed himself in Bilbrook Lane, Furzton just after 3.30pm on July 9.
An e-fit of the offender, who is white, in his thirties or forties, about 5ft 10ins, of medium build, with blue eyes and sandy, blonde hair, has been released by police.
He was wearing a blue T-shirt, turquoise knee length shorts and brown sandals.
PC Mark Pugsley said: “If anyone saw anything or anyone acting suspiciously in the vicinity of Bilbrook Lane, Furzton, on Thursday 9 July, or recognises the man in the E-Fit then please contact police.
“Your information could be vital in helping our investigation.
“You can visit your local police station or call us on 101.”
Alternatively, contact Crimestoppers anonymously on 0800 555 111 or online at www.crimestoppers-uk.org.
No personal details are taken, information is not traced or recorded and you will not go to court.