A smart, reversible flannel shirt with a bonus layer of insulation.
Our tech flannels were such a hit, we 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 a secret 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. A smooth taffeta lining and metal snaps on the inside make the Sinclair reversible, so you can wear it on either side.