The rainbow colors on NFL hats represent all types of cancers as part of the "Crucial Catch" campaign initiated by the American Cancer Society (ACS) . The campaign helps with the detection and early treatment of cancer, and the proceeds from the sale of Crucial Catch merchandise go to the ACS to help fight cancer and fund research further. The NFL-issued apparel features a beautiful rainbow (or multi-colored) logo representing all cancer types during the Crucial Catch games, which begin during Week 4 of the competition and continue through Week 6 of the season. The multi-colored equipment for players, including helmet decals, captains patches, wristbands, sideline hats, and quarterback towels, also feature the rainbow colors. In 2021, the NFL introduced its new logo consisting of rainbow colors, which represented complete support and solidarity with the LGBTQ+ community. However, the rainbow colors on NFL hats are not related to the LGBTQ+ community, but rather to the Crucial Catch campaign for cancer awareness.