A shirt for math lovers and Pi enthusiasts, let's celebrate Pi Day together! There are 5 sizes (S/M/L/XL/XXL) Please compare the detail sizes with yours before you purchase! Use similar clothing to compare with the size. Easily helps you to create daily fashion looking for many occasions. Size Chart: (1Inch=2.54cm) S-------Length 65cm/25.6 -----Bust 94cm/37.0 -----Sleeve 17.0cm/6.7 M-------Length 67cm/26.0 -----Bust 98cm/38.6 -----Sleeve 18.0cm/7.1 L--------Length 70cm/27.5 -----Bust 104cm/40.9 -----Sleeve 19.0cm/7.5 XL-------Length 73cm/28.7 -----Bust 112cm/44.1 -----Sleeve 21.0cm/8.2 XXL-----Length 76cm/29.9 -----Bust 120cm/47.2 -----Sleeve 22.0cm/8.6 Please allow 1-2cm differences due to manual measurement, thanks! High-quality after-sales service: If you have any dissatisfaction or doubts about our clothes, please contact us by email, we have a professional after-sales team to serve you. Customer satisfaction is our greatest motivation. As different computers or phones display colors differently, the color of some clothes may be slightly different from the picture, thank you.