A slimmer boyfriend fit with a pocket for holding (small) stuff is one of those closet staples everyone should have at least one of. Our signature Tri-Blend Fabric: Tri, for three, different fabrics blended together. 50% Polyester + 38% Cotton + 12% Rayon = Tri-blend. Voilà! Charis (best hair in the office/city), is 5'10 and wears an Extra Small.