The NFL isn’t getting in the way of Minnesota Vikings running back Alexander Mattison’s flashy gold chain mouthpiece, despite its strict uniform policy. Mattison hasn’t been the first to sport a chain on the field, but it’s a new twist to his already daring necklace choices. After spending his first four years as a backup, Mattison seized the opportunity to step up when former Pro Bowl rusher Dalvin Cook left. Although he hasn’t surpassed 100 rushing yards in a game, his flashy mouthpiece continues to capture TV cameras’ attention. Despite this, Mattison may have cleared it with the league office before wearing it, and we can only hope it won’t attract negative attention from the NFL and put him on the uniform rules radar.