To layer or not to layer -- either will work with this triblend long sleeve hooded tee shirt. This 4.5 oz. 75/13/12 poly/cotton/rayon is the perfect weight and "silky soft" feel to wear under a blazer or puffer vest or holds up as a stand alone piece. 3 panel drawstring hood and v-slits on the sides for added wearing ease. Available in black or heather royal with an off white screenprint. Fits true to size with a large being 23" wide across the front chest.