Shirts By Sarah Men's Geek Science Atom Shirts Scientist T-Shirts Ultra 6.1oz Ultra Pre-Shrunk Cotton T-Shirt 100% cotton (sport gray contains 10% polyester) A great gift idea for the science geek in your life! The generic design on these shirts suit a wide array of scientific disciplines Unisex size information: small: 28" long by 18" wide medium: 29" long by 20" wide large: 30" long by 22" wide x-large: 31" long by 24" wide 2x: 32" long by 26" wide 3x: 33" long by 28" wide Proudly Printed In U.S.A. Taped Shoulder To Shoulder, Double Needle Stitched Throughout, 7/8 Collar