The adidas uniforms are simple and sharp, featuring “red with white numerals and the letters “NI” on each sleeve. The NI on the sleeve is believed to be unique to 1965 as in 1966, player numbers were used on the sleeves.” More from the release:
In addition to the jerseys, NIU will replicate the look of the black helmets worn by the 1965 team by adding a red center stripe surrounded by a white stripe on each side and the player’s number in white on both sides of the helmet. The helmets will have gray facemasks.