AAR Custom Tee 60% Cotton // 35% Polyester // 5% Spandex Added Spandex gives Tees a stretchy and roomy feel Custom Taped seams for comfort and durability around the neck Reinforced neck collar to stand up in the wash(no bacon necks!) Seth is wearing a 2XL, Bob is wearing a Large SIZE CHART For Chest measurement, measure across the chest to the center of each arm pit. Do not wrap around back. SIZE BODY WIDTH BODY LENGTH SM 20.4 27.75 MD 21.4 28.75 LG 22.4 29.75 XL 23.4 30.75 2XL 24.4 31.75 3XL 25.4 32.75 4XL 26.4 33.75