Why is Boston Celtics star Jaylen Brown wearing a single, long sleeve on his left arm this season? Is it a good luck charm? Is it something injury-related? Since Brown has never donned this look before the current, 2025-26 campaign, fans are wondering why he’s doing it. Well, NBC Sport’s Boston Kayla Burton has delivered the answer. Burton asked Brown on Friday night about the sleeve. “He said he wanted to switch up his “aura” this year,” Burton reported. “He didn’t love his aura last year and wanted something different.” Ps. I asked Jaylen Brown why he wears the one-sleeve this year? He said he wanted to switch up his “aura” this year. He didn’t love his aura last year and wanted something different. Seems to be working. pic.twitter.com/evU60wefzB— Kayla Burton (@Kay_Breezy22) November 1, 2025 The sleeve is working. Brown is averaging 27.7 points, 5.2 rebounds and 4.2 assists for Boston so far this year on 55.0 percent shooting. The Celtics have won three games in a row after dropping their first three. JB has dropped 30 or more in each of Boston’s last two games, which were both impressive wins against the Cleveland Cavaliers on Wednesday and the Philadelphia 76ers on Friday. Jaylen Brown is having such an incredible start to the season … and I still think he has room to level up even more.— John Karalis ð¬ð· (@John_Karalis) October 31, 2025 The best thing about Brown’s play this season is that he’s not forcing the issue, but rather letting the game come to him in the flow of the offense. Sure, there will always be the occasional head-scratching shot selection from JB, but he’s playing a very mature brand of basketball in 2025-26, which has put anyone at ease who thought that Brown might embrace the role of shot-chucker with Jayson Tatum sidelined. Story continues below advertisement Brown has done anything but that, proving once again why he’s a winning type of player. The Celtics suddenly look a lot better than people expected them to, and Brown’s steady play is at the center of that.