The NFL is once again covered head-to-toe in pink as part of the league's Breast Cancer Awareness initiative.

Fans can also purchase pink items to support the cause. But a shockingly small amount of the fans' money is going toward cancer research.

According to data obtained from the NFL by Darren Rovell of ESPN, the NFL "takes a 25% royalty from the wholesale price (1/2 retail), donates 90% of royalty to American Cancer Society."

In other words, for every $100 in pink merchandise sold, $12.50 goes to the NFL. Of that, $11.25 goes to the American Cancer Society (ACS) and the NFL keeps the rest. The remaining money is then divided up by the company that makes the merchandise (37.5%) and the company that sells the merchandise (50.0%), which is often the NFL and the individual teams.

Then consider that only 71.2% of money the ACS receives goes towards research and cancer programs.

In the end, after everybody has taken a cut, only 8.01% of money spent on pink NFL merchandise is actually going toward cancer research

According to the NFL, any money they take in, that is not donated to ACS, is used to cover the costs of their breast cancer awareness program, "A Crucial Catch." The NFL also told Business Insider they donated approximately $1 million per year to the ACS in the first three years of the program.

Read more at Business Insider.