does it really make a difference? some of my orange vests glow during the day,i test my camo with a blacklight,just noticed that 2 of my vests glowed bad! one solid one camo orange. got pegged opening day by a nice shooter ,came home and just had to check.... it glowed !!!!!! not now.....uv-killer. i wont make that mistake again! i just need to climb a different tree!