ComputerGear Pi Day Shirt TShirt T shirt Math Geek Nerd Graphic Cotton Tee Men Women Adult Geeky math teacher shirts for men women Pi Day T-shirts in black, denim blue or ash grey; Small fits chest/bust 34-36 in. chest, Medium fits 38-40, Large fits 42-44, X-Large fits 46-48, plus size 2XL fits 50-52, 3XL fits 54-56, 4XL fits 58-60 Ultimate Pi Day t shirt makes a perfect STEM gift for mathematically inclined math teacher gift; soft 100% preshrunk cotton machine wash/dry The math lover in your life will appreciate this graphic expression of the number pi as the number 3.14159..on high quality Pi Day tshirt The perfect Pi Day 3.14 Shirt; Math teachers love Pi Day tee shirt Novelty adult Pi shirts are a ComputerGear copyrighted/trademarked design. Designed and printed in USA by ComputerGear.