It is named Invisible Camouflage.
See if you can spot the guy wearing it,,,,,, In the video he even gives hints to his location so turn up the sound.
Even with the hints I bet you can't find him.
http://www.norcalblogs.com/gate/2011/01/new-hightech-camouflage-cannot-be-seen-video.php
That looks like a ghillie suit to me.
It might cause havoc if there were trees in the outfield at Petco Park