- NFL players are wearing cleats in support of causes and groups this weekend
- Matthews is wearing custom cleats for Kaepernick's Know Your Rights Camp campaign
"He has paid the ultimate sacrifice in order to bring true everyday issues to light," Matthews wrote on Instagram about Kaepernick.
After President Trump's September comments about players who kneel during the anthem, Matthews, whose brother, a former Marine, died in Afghanistan
while working as a defense contractor, told ESPN
he planned to kneel during the anthem until Trump apologized.
"To keep it honest, he was calling a lot of us, and I feel that he was calling myself, an S.O.B., and that's not OK and very disrespectful," he said. "So I plan to kneel until the president apologizes."
The design on the cleats Matthews will wear was done by SoulsbySir, who made other custom cleats for NFL players for the weekend, including for Pittsburgh Steelers' TJ Watt
, the Titans' Logan Ryan
, and several members of the Baltimore Ravens
Matthews won't be the first professional athlete to make a statement with his shoes this year. LeBron James wore a custom pair of his LeBron 15s with the word "Equality" written across the back for the Cleveland Cavaliers' opening game in October.