Ohio State Swetashirt Womens Size M Red 100% Cotton Pockets Authentic Apparel ARMPIT TO ARMPIT: 18 (flat lay* measurement) For LENGTH measurements, please see pictures. If you are unsure about the size and fit, flat lay a similar item you already own and measure for comparison. All items ship quickly. *Flat lay = the distance across the garment. Circumference = the distance around the garment. *Circumference = 2 X flat lay measurement (example: if garment measures 16 inches across, circumference equals 32 inches). Great Condition 014336