Casual hanging-out-at-home staples get a boost from bold accessories and pops of red. In Fashion From left: Nili Lotan jeans, $395, nililotan.com; Celine by Hedi Slimane shoes, $1,150, celine.com ...

There’s a reason why the best flannel shirts for men never leave the fashion conversation, and our 11 favorites prove it. Here's why you need one—or three. Skip to main content.