Snipers usually wear camouflage clothing, to avoid being seen. Camouflage works by hiding the outline and shape of the human body, so that it is not easily seen. Camouflage does not work very well when the person wearing it is moving because the eye sees movement much better than shapes or colors. Snipers often paint their faces green or black to make them shine less, and blend in with the surroundings. Sometimes snipers wear special camouflage suits, called ghillie suits. Ghillie suits are made of shredded burlap or yute and often have plants attached to them. Snipers will often make several different ghillie suits to help them hide in different kinds of terrain. These suits are very effective at hiding the sniper. Often a sniper can be invisible to an enemy standing right next to him.