Feel toasty warm without feeling the weight of an extra layer! The Buck Naked®  Base Layer Top is the perfect addition to your cold weather wardrobe, making winter much more bare-able. In diamond knit 4.4-oz. 93% nylon/7% spandex, it wicks sweat, keeps you smelling fresh and won't pinch or chafe when you reach. It's light (and polished) enough to wear solo, or you can throw it on under a vest, or build winter warmth from the base up. You do you. We'll do the rest.