The Independence Day Armor Set consists of dyed leather armor in the colors red, white, and blue to resemble Independence Day. The set of armor was released on the 4th of July in 2014 in conjunction with Independence Day.
Note that while the Independence Day Armor can be washed and dyed like normal leather armor, it is not possible to acquire the same vibrant shades of color as the original armor once the armor is modified. This is because the original colors are different to the regular dye colors available in-game.