- Sizing Questions - SIZE CHART - Not Sure still? Order same size as you would our polos. Not Bought one of our Polos? Model wears Size Large in this item as well as Size Large Polo - Model wears Size XL in S/S & L/S Tees - A lightweight Vest, 88.26% Poly 11.74% Spandex, great for layering! Perfect weight for Fall in Tennessee. - Fitted Thin Elastic Hem at Waist & Sleeve - Officially licensed with the University of Tennessee features our Power T logo embroidery on the left chest .