And so the thermometer is telling you that it’s a bit brisk. Well, that never stopped a Carhartt Base Force™ Cold Weather Bottom from getting the job done. The Carhartt 100642BT made of 4.5-ounce, 100% polyester midweight knit and is unique in that it not only wicks away sweat, but it also fights odors. It has smooth flat-lock seams for comfort. The elastic waist keeps in the warmth. It goes well with the Base Force™ Cold Weather Crewneck Top. They were made for each other. Like beer and pizza.