Atsko U-V Killer Treated Vest Blaze Orange. However this high-visibility vest by Atsko is also water and stain repellent to keep the UV Killer in place. Being a fluorescent yellow makes the Atsko U-V Killer Treated Orange Vest highly attractive to Dichroics which are organisms that can easily tell UV light from light-based particles and ultraviolet light. Therefore this hunting vest by Atsko kills the ultraviolet fluorescence glow on the vest and increases the fade resistance of the high-visibility orange. For a hunting vest that will keep you highly visible in the day and warm in the evening get the Atsko UV Killer Treated Hunting Vest. Specifications for Atsko U-V Killer Treated Vest: Manufacturer: Atsko Age Group: Adults Gender: Unisex Application: Deer Package Contents: Atsko U-V Killer Treated Vest UV killer treated blaze orange vest is seen as a shade of yellow by deer and other dichromate's while appearing as bright blaze orange to the human eye. U-V-Killer kills the ultraviolet fluorescence glow on this blaze orange vest and increases the fade resistance of the high-visibility orange. It is sealed in a factory-applied fluorocarbon water and stain repellent to keep the U-V-Killer in place. 600 sq. in. One size fits all.