• The constant ratio of the circumference to the diameter of any circle is pi. This is a cute graphic of a slice of pie and pi. For the math, science, physics, explorer person who loves numbers and science. Some people, math is easy as pie!
• This t-shirt is made of 100% fine ring-spun (soft) combed cotton which makes it durable and comfortable. Machine washable (wash inside out in cold water, hang dry or tumble dry on low). Available in multiple colors for men, women and kids. T-shirts are fitted, so for a looser fit please order a size larger than typical. Check out our brand page for other creative tees. This t-Shirt is sure to be a hit and is perfect for a birthday, Christmas, Hanukkah, graduation or any gift giving occasion.
• Lightweight, Classic fit, Double-needle sleeve and bottom hem

The constant ratio of the circumference to the diameter of any circle is pi. This is a cute graphic of a slice of pie and pi. For the math, science, physics, explorer person who loves numbers and science. Some people, math is easy as pie!Dallas Shop and Go Pi T-Shirts