Ben Affleck cuts casual figure in plaid flannel and jeans while heading to pick up his son Samuel

Ben Affleck looked relaxed as he ran to pick up his son Samuel from school in Brentwood on Friday.

The 50-year-old actor wore blue plaid flannel and dark jeans.

He walked in light brown boots while holding his 10-year-old son’s hand.

The Argo star added reflective sunglasses on the sunny afternoon.

His youngest child, who he shares with ex-wife Jennifer Garner, rocked in a dark green polo shirt, dark blue pants and black and white sneakers.

Affleck held Samuel’s hand as they carefully crossed the street to his parked car.

On the go: The 50-year-old actor wore a blue plaid flannel and dark jeans

Hand in hand: He walked in light brown boots while holding his 10-year-old son’s hand

Be in a hurry? He seemed to be late to pick up his son, running part of the way to get there

He carried a bag over his right arm and held a dark blue sweater in his other hand.

Ben’s appearance came after his longtime friend and collaborator Kevin Smith shared details about Affleck’s long vows.

‘He wrote a great speech which he read’ [Jennifer Lopez] at the wedding, it was breathtaking,’ he shared during a performance on The View.

Sweet ceremony: Ben’s appearance came after his longtime friend and collaborator Kevin Smith shared details about Affleck’s long vows

Lovingly: ‘He wrote a great speech which he read’ [Jennifer Lopez] at the wedding, which was breathtaking,” he said during a performance on The View

“He is one of my favorite writers in the world. He wrote his vows – they [both] wrote their vows, but he wrote a big speech that he read to her at the wedding, which was breathtaking,” Smith said.

‘And it was long. That’s one of my favorite things about Ben; he is his own biggest fan so he wrote like a 12 page speech. I was like, “Keep talking, keep talking.”‘

In her On the JLo newsletter about the Georgia wedding, Lopez, 53, shared more details about what Affleck said on the special day.

‘This is heaven. Here. We’re in it now.’ That’s one of my favorite lines Ben wrote from a movie he directed called Live By Night,” she wrote. “He also said it in his speech on the night of our wedding reception, and I thought . . . how perfect.”

Even more details: In her On the JLo Georgia wedding newsletter, Lopez, 53, shared more details about what Affleck said on the special day