Military Spec / Regulation TAN 499 Kevlar Helmet Band for OCP or Multicam Uniforms Choose BLACK Thread for Army or SPICE BROWN Thread for Air Force Cat-Eyes on back of the Band 3 Sided usually have Blood Type over LEFT Ear and Battle Roster over RIGHT Ear Offset Center leaves room for Night Vision Gear US ARMY regulation embroidered OCP Tan 499 helmet bands with black thread. The last name is centered or offset center for night vision equipment, blood type over left ear and battle roster over right ear. This item is for wear with Army OCP Uniforms. USAF regulation embroidered OCP Tan 499 helmet bands with spice brown thread. The bands are embroidered with the last name centered or offset center to accommodate for night vision equipment. blood type over left ear and battle roster over right ear. This item is for wear with AF OCP Uniforms.