Oklahoma State honored the victims of the plane crashes of 2001 and 2011, along with the homecoming crash of 2015, during the Cowboys' game against No. 10 West Virginia on Saturday.
There are 18 stickers on the helmets, with each sticker honoring one of the lives lost (10 lost in '01 plane crash, four lost in '11 plane crash, four lost in '15 parade crash), as well as a kneeling cowboy sticker that Oklahoma State intends to wear for every homecoming game in the future.
The black helmets also displayed a retro OSU design, which is the same design Oklahoma State wore in the 1980s under then-head coach Jimmy Johnson.
The Cowboys defeated West Virginia 37-20.