A man suspected of attacking two girls on the New South Wales Central Coast attempted to camouflage himself, even wearing a full ghillie suit during an assault, police say.

While walking to school on May 15, a 12-year-old girl was sexually assaulted by a man who grabbed her from behind and took her into nearby bushland.

Officers were told the girl was walking along a pathway between Reeves and Carrington streets at Narara, about 7:45am.

The man tied her up with cable ties and sexually and indecently assaulted her.

Police said the man was wearing clothing described as a "3D leafy ghillie suit" which included a face mask, gloves and a camouflage backpack.

The girl managed to escape and made her way to school where she reported the incident. She has since physically recovered from her injuries.

Police are also investigating the attempted abduction of a 18-year-old woman near Narara Railway Station on June 4.

The accused grabbed a 12-year-old girl and pulled her into bushland while wearing this clothing. ( Supplied: NSW Police )

After the woman got off a train just before 4:30pm and walked along Narara Valley Drive and into the laneway leading to Koninderie Parade, she was approached by a man who grabbed her around the neck.

The woman kicked back at the man and broke free from his grip and ran toward Koninderie Parade calling out for help. She then contacted triple-0.

The man was wearing long camouflage pants, black heavy boots and a loose covering over his face.

Police believe the same man is responsible for both attacks due to the victims' descriptions of physical appearance and conversations.

The man is described as being aged in his mid-20s, 175-180cm tall with a chubby build, grey/blond hair and blue eyes.

'Distinct' ghillie suit clothing

Sex Crimes Squad Commander Detective Superintendent Linda Howlett said it would be difficult to get around suburbia wearing a ghillie suit without drawing attention to yourself, so it is believed he knew the best routes to go unnoticed.

Detective Superintendent Howlett urged the community to take a good look at the items to see if they recognise anything.

Police would like to hear from anyone who recognises this clothing. ( Supplied: NSW Police )

"The clothing ... is quite distinct, but it is widely available and may not necessarily have been purchased at the same time — or even purchased recently.

"While we continue with our inquiries, we are appealing to the community to help narrow down our search.

"Anyone who knows someone who fits the description and who would have access to an outfit like this is urged to get in touch with us as soon as possible."

Detectives believe the man would be very familiar with the Narara area.