ComputerGear Funny Genius Element Periodic Table Chemistry T-shirt Shirt Teacher Gift Those in the know will love wearing this fun Genius Element T-shirt Wearing Genius Element T-shirt is pure genius! Heather Grey 90% cotton / 10% polyester T-shirt Small fits chest/bust 34-36 inches, Medium fits 38-40 inches, Large fits 42-44 inches, X-Large fits 46-48 inches, XX-Large fits 50-52 inches, 3XL fits 54-56 inches, 4XL fits 58-60 inches A ComputerGear Exclusive; Machine wash/dry; Made in the USA