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Discussions of cleats usually focus on players being fined by the league for wearing shoes that don’t conform to the league’s uniform guidelines even if they are designed to bring attention to charitable causes, but that’s not the case this week.

The NFL announced on Monday that more than 500 players will be taking part in a campaign called My Cause, My Cleats designed to raise awareness for charitable organizations. Players were free to design their own cleats, which will then be auctioned off with 100 percent of the proceeds donated to their chosen charities.

“One of the great NFL traditions is how our players passionately support important causes in their communities and around the globe every year,” NFL Commissioner Roger Goodell said in a statement. “They are incredibly creative by nature so we are not surprised how they are seizing the opportunity this week with inspiring expressions of their charitable commitments on their cleats, online and through social media.”

Jets wide receiver Brandon Marshall, Panthers tight end Greg Olsen, Cardinals running back David Johnson, Buccaneers wide receiver Mike Evans and Patriots defensive end Chris Long are some of the players that will be taking part in the rare week that the NFL is encouraging mismatched footwear.