Introducing The Semi-Fitted Undershirt. We know a snug and slim fit isn't for everyone, so we created a new version of our undershirt designed with added ease through the body and a raised neckline. This style is perfect for anyone looking for a more modest look and coverage. This undershirt is made with the same best-selling sweat proof technology, designed with built-in underarm shields that wick away moisture and odor.