Ghillie suit

A ghillie suit (called a yowie suit by the Australian Army) is a type of camouflage clothing designed to resemble the background environment such as foliage, snow or sand. Typically, it is a net or cloth garment covered in loose strips of burlap, cloth or twine, sometimes made to look like leaves and twigs, and optionally augmented with scraps of foliage from the area.

Snipers,hunters and nature photographers may wear a ghillie suit to blend into their surroundings and conceal themselves from enemies or targets. The suit gives the wearer's outline a three-dimensional breakup, rather than a linear one. When manufactured correctly, the suit will move in the wind in the same way as surrounding foliage. Some ghillie suits are made with light and breathable material that allows a person to wear a shirt underneath.

The ghillie suit was developed by Scottish gamekeepers as a portable hunting blind. Lovat Scouts, a Scottish Highland regiment formed by the British Army during the Second Boer War, is the first known military unit to use ghillie suits. In 1916, Lovat Scouts went on to become the British Army's first sniper unit. The term ghillie references Ghillie Dhu, derived from gille, the Scottish Gaelic for "servant" or a "lad". In English, this term was especially used to refer to those assisting in deer hunting, deer stalking or fly fishing expeditions in the Scottish Highlands.

The Australian Army sniper's outfits are nicknamed "yowies", named for their resemblance to the Yowie, a mythical hominid similar to the Yeti and Bigfoot which is said to live in the Australian wilderness.

...
Wikipedia