Guys in Duluth calmly go about their day in the kind of cold that chills most to the bone. Is it their Scandinavian ancestry keeping them warm? Maybe a bit – but they also rely on beefier shirts to fend off the cold. Like Burly Thermals. They’re made of super-dense 9.9-oz. 60% cotton thermal knit – soft as all get out, with a classic honeycomb texture that traps heat against the skin. Better yet, we’ve added 40% polyester that fights shrinking and fading. Side panels instead of side seams for no-chafe comfort on the move. Built hefty and roomy enough to wear on their own, or layered under a shirt jac to deal with breath-stopping cold like the winds that blow off Lake Superior. It even has a roomy chest pocket with built-in pencil sleeve – something you never see on thermals.