Flylow Sinclair Flannel

A traditional flannel shirt with a bonus layer of insulation built in.

Flylow's tech flannels were such a hit, they had to make an insulated version, too. The Sinclair Insulated Flannel has all the trappings of a regular ol’ flannel button-up, but it has asecret weapon you can barely notice from the outside: It’s stuffed with 40 grams of Spaceloft™ synthetic down insulation for added warmth. Tough poplin fabric on the forearms helps with abrasion resistance.