Spirit River UV2 Scud Shrimp leads the way in UV technology with having a mix of primary colors that have been enhanced with UV fluorescent and UV reflective dyes. It is designed to resemble the colors of the most basic and abundant trout foods and there is also a touch of pearl blue Lite Brite added to add life to the patterns.The Spirit River UV2 Scud Shrimp is made in the U.S.A.